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High-temperature creep mechanism of Ti-Ta-Nb-Mo-Zr refractory high-entropy alloys prepared by laser powder bed fusion technology Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-14 Junyi Feng, Binghao Wang, Yintao Zhang, Peilei Zhang, Changxi Liu, Xiaoli Ma, Kuaishe Wang, Lechun Xie, Ning Li, Liqiang Wang
Creep resistance, which is one of the most important deformation modes, is rarely reported for refractory high entropy alloys (RHEAs). The experiment investigated the high-temperature creep mechanism of Ti-Ta-Nb-Mo-Zr RHEA prepared by laser powder bed fusion (LPBF) technology. The high cooling rate of LPBF suppresses most of the elemental segregation, but there are still over-solidified precipitates
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Discerning the duality of H in Mg: H-induced damage and ductility Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-10 Yucheng Ji, Fei Shuang, Zhiyang Ni, Chenyang Yao, Xiao Li, Xiaoqian Fu, Zhanghua Chen, Xiaogang Li, Chaofang Dong
Prone H reduction is considered an important factor in the poor corrosion resistance of Mg and its alloys, while the reduced H simultaneously impacts their mechanical properties whose mechanism is still unclear. It can be experimentally found that the elongation of Mg charged with atomic H is 2.76 % greater than that in air. To reveal the underlying physics, multi-scale modeling combining first-principle
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3D microstructure-based modelling of ductile damage at large plastic strains in an aluminum sheet Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-08 Abhishek Sarmah, Shahryar Asqardoust, Mukesh K Jain, Hui Yuan
Damage initiation in high-strength aluminum alloys with a precipitate-rich matrix is typically particle-driven. In AA7075-O temper, particle cracking and decohesion are the primary void nucleation mechanisms. However, the impact of particle-induced voiding on subsequent void growth and coalescence remains inadequately understood. Given that void growth and coalescence are inherently three-dimensional
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Creep-fatigue damage level evaluation based on the relationship between microstructural evolution and mechanical property degradation Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-08 Li Sun, Xian-Cheng Zhang, Kai-Shang Li, Ji Wang, Shun Tokita, Yutaka S. Sato, Shan-Tung Tu, Run-Zi Wang
Creep-fatigue interaction is identified as a primary failure mode for components operating under high temperatures. As operational durations extend, this interaction not only alters the material's microstructures but also initiates a gradual degradation in mechanical properties, significantly impacting its deformation and damage behaviors. In this work, the dynamic microstructural evolution of GH4169
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Probing the micro-mechanism of precipitate-strengthened alloys with precipitate free zone: An experimental and theoretical study Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-04 Fang Li, Zilong Guo, Geng Chen, Songyi Chen, Kanghua Chen, Changjun Zhu
Precipitate free zone (PFZ) consistently forms near the grain boundaries (GBs) in precipitate-strengthened alloys, significantly weakening the materials because of their intrinsic softness compared to the bulk. However, the influence of PFZ near GBs on deformation mechanism remains largely unrevealed. Here, we systematically investigate the effects of PFZ on the macroscopic mechanical behavior and
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In-situ neutron diffraction study of the strengthening mechanism and deformation behavior of cellular structure in high-entropy alloys by additive manufacturing Int. J. Plasticity (IF 9.4) Pub Date : 2024-08-03 J.Q. Shi, C.P. Huang, S.H. Deng, Z.J. Tan, H.L. Lu, J.Z. Hao, F.R. Shen, Y.F. Jia, J. Chen, Q. Wang, L.H. He, G. Wang
Additively manufacturing alloys by a selective laser melting (SLM) usually generates large temperature gradients and rapidly cooling, which enables a refined microstructure, an elemental segregation and high-density dislocations network to achieve an excellent strength-ductility synergy. In this study, the SLM fabricates FeCoNiAlTi high-entropy alloys (HEAs) with a cellular structure composed of high-density
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Achieving excellent uniform tensile ductility and strength in dislocation-cell-structured high-entropy alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-31 Rui Huang, Lingkun Zhang, Abdukadir Amar, Peter K. Liaw, Tongmin Wang, Tingju Li, Yiping Lu
Body-centered-cubic (BCC) high-entropy alloys (HEAs) encounter significant challenges in obtaining a high uniform tensile ductility (UTD). A dense dislocation-cell (DC) structure is produced in a heterogeneously grained HEA under tensile deformation, resulting from the anchored dislocation motion by grain interior elemental segregation. This fluctuation in elemental concentration is facilitated by
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Chromium gradient stainless steels with simultaneous high strength, ductility, and corrosion-resistant: In-depth study of continuous hardening mechanisms Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-30 Haodi Yang, Zhutian Xu, Linfa Peng, Xinmin Lai, Mingwang Fu
Cr-rich stainless steel sheets exhibit superior corrosion resistance but low ductility, which presents a trade-off between fabrication complexity and performance of the materials in multiple industrial applications, such as marine equipment and microreactors. By transitioning the Cr-rich (30 wt.% Cr) stainless steel component to SS 316 L with a smooth composition gradient in the thickness direction
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Hydrogen effects on the deformation and slip localization in a single crystal austenitic stainless steel Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-24 Fernando D. León-Cázares, Xiaowang Zhou, Brian Kagay, Joshua D. Sugar, Coleman Alleman, Joseph Ronevich, Chris San Marchi
Hydrogen is known to embrittle austenitic stainless steels, which are widely used in high-pressure hydrogen storage and delivery systems, but the mechanisms that lead to such material degradation are still being elucidated. The current work investigates the deformation behavior of single crystal austenitic stainless steel 316L through combined uniaxial tensile testing, characterization and atomistic
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The development of grain resolved stress fields around notch tips in soft-textured zirconium polycrystals: A three-dimensional synchrotron X-ray diffraction study Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-20 Karim Louca, Katherine S. Shanks, Amlan Das, Darren Pagan, Robert Klassen, Hamidreza Abdolvand
Texture, microstructure, and local grain neighbourhood contribute to the development of localized stresses in polycrystals. For hexagonal close-packed materials, crystal's elastic and plastic anisotropy can also be a major contributing factor, yet there is a paucity of experimental studies focusing on the extent of contribution of such parameters on the magnitude of localized stresses at microscales
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Thermodynamic modeling framework with experimental investigation of the large-scale bonded area and local void in Cu-Cu bonding interface for advanced semiconductor packaging Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-18 Sung-Hyun Oh, Hyun-Dong Lee, Jae-Uk Lee, Sung-Ho Park, Won-Seob Cho, Yong-Jin Park, Alexandra Haag, Soichi Watanabe, Marco Arnold, Hoo-Jeong Lee, Eun-Ho Lee
With the increase in computational costs driven by the use of artificial intelligence, enhancing the performance of semiconductor systems while improving efficiency has become an inevitable challenge. Due to the fine pitch limits of micro bumps, bumpless Cu-Cu bonding is emerging as the next-generation core technology. This study aims to analyze the effects of individual temperature and pressure on
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Effects of local strain on the plastic deformation and fracture mechanism of heterogeneous multilayered aluminum Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-18 Yiping Xia, Xin Bai, Huijun Fang, Xuewen Li, Xinbo Ni, He Wu, Kesong Miao, Rengeng Li, Honglan Xie, Hao Wu, Lin Geng, Guohua Fan
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Multi-functional amorphous/crystalline interfaces rendering strong-and-ductile nano-metallic-glass/aluminum composite Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-17 Yuyang Liu, Lei Zhao, Yixuan Hu, Ge Wang, Wangshu Zheng, Tim Vogel, Kolan M. Reddy, Yubin Ke, Qiang Guo
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Understanding plasticity in multiphase quenching & partitioning steels: Insights from crystal plasticity with stress state-dependent martensitic transformation Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-17 Jinheung Park, Yong Hou, Junying Min, Zeran Hou, Heung Nam Han, Binbin He, Myoung-Gyu Lee
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Dual-phase polycrystalline crystal plasticity model revealing the relationship between microstructural characteristics and mechanical properties in additively manufactured maraging steel Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-15 Jakub Mikula, Guglielmo Vastola, Yong-Wei Zhang
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NN-EVP: A physics informed neural network-based elasto-viscoplastic framework for predictions of grain size-aware flow response Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-14 Adnan Eghtesad, Jingye Tan, Jan Niklas Fuhg, Nikolaos Bouklas
We propose a physics informed, neural network-based elasto-viscoplasticity (NN-EVP) constitutive modeling framework for predicting the flow response in metals as a function of underlying grain size. The developed NN-EVP algorithm is based on input convex neural networks as a means to strictly enforce thermodynamic consistency, while allowing high expressivity towards model discovery from limited data
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A dislocation theory-based model for brittle-to-ductile transition in multi-principal element alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-14 Zebin Han, Bin Liu, Qihong Fang, Peter K Liaw, Jia Li
Multi-principal element alloys (MPEAs) have drawn great interest due to their superior mechanical properties compared to the conventional alloys. However, it is unclear in these two aspects: i) how to predict the brittle-to-ductile transition temperature (BDTT) and fracture toughness of MPEAs using theory and model; ii) how to quantify the influences of the complicated alloy composition variation and
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Operative slip systems and their critical resolved shear stresses in η-Fe2Al5 investigated by micropillar compression at room temperature Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-06 Zhenghao Chen, Tsukasa Horie, Xiaofeng Wang, Haruyuki Inui
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A crystal plasticity based strain rate dependent model across an ultra-wide range Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-05 Xiaochuan Sun, Kecheng Zhou, Chuhao Liu, Xiaodan Zhang, Huamiao Wang, Guoliang Wang, Linfa Peng
Numerous studies have investigated the strain rate sensitive behaviors of materials, consistently reporting enhanced stress values and increased dislocation density with rising strain rates. Behind these phenomena lies the intrinsic nature of dislocation activity. In this context, we introduce an analysis method within a crystal-plasticity (CP) framework, incorporating molecular dynamics insights for
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Revealing mechanism of ductility improvement of titanium thin sheet under normal stress at mesoscale from perspective of microstructure evolution Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-02 Haiyang Wang, Gang Chen, Peng Zhang, Chuanjie Wang
Improving the formability of sheet metal is a constant challenge in microforming. In this study, applying normal stresses to the specimen surface is found to be an effective method for improving the ductility of pure titanium sheets. This case only occurs when the normal stress is higher than a critical value. By characterizing the microstructure, it is found that the normal stress induces a change
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Effects of intergranular deformation incompatibility on stress state and fracture initiation at grain boundary: Experiments and crystal plasticity simulations Int. J. Plasticity (IF 9.4) Pub Date : 2024-07-01 Jiawei Chen, Tsuyoshi Furushima
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Slip-discreteness-corrected strain gradient crystal plasticity (SDC-SGCP) theory Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-28 Ran Chen, Guisen Liu, Peidong Wu, Jian Wang, Lei Zhang, Yao Shen
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Effect of dynamic strain ageing on flow stress and critical strain for jerky flow in Al-Mg alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-28 Surajit Samanta, Jyoti Ranjan Sahoo, Sumeet Mishra
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Unveiling the deformation micro-mechanism for mechanical anisotropy of a CoCrFeNi medium entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-26 Qiang Zhang, Shao-Shi Rui, Xianfeng Ma, Ligang Song, Fei Zhu, Yaowu Pei, Jiaxin Wu
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Time-resolved evolution of the deformation mechanisms in a TRIP/TWIP Fe50Mn30Co10Cr10 high entropy during tensile loading probed with synchrotron X-ray diffraction Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-24 J.G. Lopes, J. Shen, E. Maawad, P. Agrawal, N. Schell, R.S. Mishra, J.P. Oliveira
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Dynamic mechanical response and constitutive model of (Ti37.31Zr22.75Be26.39Al4.55Cu9)94Co6 high-entropy bulk metallic glass Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-23 Xianzhe Zhong, Qingming Zhang, Mingzhen Ma, Jing Xie, Mingze Wu, Jiankang Ren
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Microstructural origins of enhanced work hardening and ductility in laser powder-bed fusion 3D-printed AlCoCrFeNi2.1 eutectic high-entropy alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-23 Yinuo Guo, Haijun Su, Hongliang Gao, Zhonglin Shen, Peixin Yang, Yuan Liu, Di Zhao, Zhuo Zhang, Min Guo, Xipeng Tan
Limited tensile ductility usually restricts the practical applications of new classes of high-strength materials in many industrial fields. Therefore, in-depth understanding of the work hardening behavior and its underlying plastic deformation mechanism are critical for the newly developed high-entropy alloys (HEAs). In this work, a geometric atomistic model of face-centered cubic (FCC)/ordered body-centered
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Numerical modeling of shear band effect on Goss grain recrystallization in electrical steels: Crystal plasticity finite element and phase field modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-22 Kyung Mun Min, Hyukjae Lee, Hyung-Don Joo, Heung Nam Han, Myoung-Gyu Lee
This study investigates the effect of shear band evolution on the nucleation of Goss {110}<001> texture during the primary recrystallization of 3.24 wt% Si grain-oriented electrical steel. Nucleation at the early stage of primary recrystallization of the steel is explored both experimentally and numerically. The experimental approach involves cold rolling the steel specimens to obtain a thickness reduction
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Stored energy density solution for TSV-Cu structure deformation under thermal cyclic loading based on PINN Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-22 Hongjiang Qian, Jiebin Shen, Zhiyong Huang, Jian Wang, Qingyun Zhu, Zeshuai Shen, Haidong FAN
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Artificial neural network enhanced plasticity modeling and ductile fracture characterization of grade-1 commercial pure titanium Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Abrar Salam Ebrahim, Qi Zhang, Jinjin Ha
This study primarily aims to develop a robust modeling approach to capture the complex material behavior of CP-Ti, appeared by high anisotropy, differential hardening due to anisotropy evolution, and flow behavior sensitive to strain rate and temperature, using artificial neural networks (ANNs). Plasticity is characterized by uniaxial tension and in-plane biaxial tension tests at temperatures of 0
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Multi-scale annealing twins generate superior ductility in an additively manufactured high-strength medium entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Bojing Guo, Zhongsheng Yang, Qingfeng Wu, Chenbo Xu, Dingcong Cui, Yuhao Jia, Lei Wang, Junjie Li, Zhijun Wang, Xin Lin, Jincheng Wang, Feng He
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Lode-dependent anisotropic-asymmetric yield function for isotropic and anisotropic hardening of pressure-insensitive materials. Part II: Stress invariant-based coupled quadratic and non-quadratic function Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-21 Songchen Wang, Jeong Whan Yoon, Yanshan Lou
This research couples a Lode-dependent anisotropic-asymmetric (LAA) frame (Lou and Yoon, 2023. International Journal of Plasticity, 166, 103,647) with a stress-invariant-based coupled quadratic-non-quadratic (CQN) anisotropic hardening function to analytically characterize the anisotropic-asymmetric hardening of sheet metals under uniaxial tension and uniaxial compression. Experiments are conducted
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An extended gradient damage model for anisotropic fracture Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-19 Liang Xue, Ye Feng, Xiaodan Ren
This paper combines energy decomposition and an extended gradient damage (EGD) model to develop an anisotropic fracture framework with decoupling of tensile and shear cohesive laws. By introducing the shear-normal decomposition in the energy form, the driving force of the damage variable is established within the framework of the EGD model, which is then capable of capturing the traction-separation
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A rational multiscale nonlinear constitutive model for freeze–thaw rocks under triaxial compression Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-18 Wenlin Wu, Lunyang Zhao, Yuanming Lai, Zhaomin Lv, Yanyan Chen, Jiachuan Ran
The stability and durability of rocks in cold regions are significantly impacted by the degradation of mechanical properties caused by freeze–thaw (F–T) environment. In this work, we shall propose a rational multiscale nonlinear constitutive model based on thermodynamics, micromechanics, and fractional calculus theory to describe the complete deformation and failure process of F–T rocks under triaxial
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Effect of loading modes on uniaxial creep-fatigue deformation: A dislocation based viscoplastic constitutive model Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-18 Kai Song, Lianyong Xu, Lei Zhao, Yongdian Han, Ninshu Ma, Kaimeng Wang, Zhibao Ma, Yongchang Liu
A comprehensive investigation was conducted on the stress-strain responses and microstructural evolutions of 9Cr3Co3WCu martensitic steel at 650 ℃ subjected to low cycle fatigue tests, strain-controlled creep-fatigue tests (SNCFTs), and hybrid stress-strain-controlled creep-fatigue tests (HSSCFTs). The creep strain accumulation per cycle in HSSCFTs exhibited three stages: an initial decrease in the
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Double-peak strain hardening behavior of Mg–1.2 wt.%Y alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-17 Bo Guan, Li Wang, Yunchang Xin, Peidong Wu, Jing Xu, Xiaoxu Huang, Qing Liu
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On the anisotropic coalescence of elliptic cylindrical voids considering the geometric and distributive properties Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-17 Jiawei Chen, Tsuyoshi Furushima
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Modeling the yield strength of nanocrystalline metals Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-16 Yanli Ma, Yi He, Jiabin Yang, Pan Dong, Ziyuan Li, Jianzuo Ma, Liming Chen, Weiguo Li
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Rediscovering the Mullins effect with deep symbolic regression Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-14 Rasul Abdusalamov, Jendrik Weise, Mikhail Itskov
The Mullins effect represents a softening phenomenon observed in rubber-like materials and soft biological tissues. It is usually accompanied by many other inelastic effects like for example residual strain and induced anisotropy. In spite of the long term research and many material models proposed in literature, accurate modeling and prediction of this complex phenomenon still remain a challenging
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High-cycle and low-cycle fatigue characteristics of multilayered dissimilar titanium alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-13 Tianle Li, Wei Fan, Xifeng Li, Huiping Wu, Dayong An, Qi Hu, Jun Chen
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Unveiling the orientation sensitivity of creep life in near [001] oriented Ni-based single crystal superalloys at intermediate temperatures Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-13 Pengfei Qu, Wenchao Yang, Qiang Wang, Chen Liu, Jiarun Qin, Jun Zhang, Lin Liu
Although blades with a deviation angle of less than 15° between the blade stacking axis and the [001] orientation are qualified in the industry, the creep life of samples near [001] orientation exhibits significant anisotropy at intermediate temperatures. Those crystals having orientations within 15° from precise [001] exhibited significantly longer lives when their orientations were closer to the
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Microstructural causes and mechanisms of crack growth rate transition and fluctuation of additively manufactured titanium alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-11 Xinyan Wang, Mengyu Cao, Yang Zhao, Jingjing He, Xuefei Guan
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A comprehensive analysis of cermet design and thermal cyclic stability via elasto-viscoplastic crystal plasticity modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-09 Glenn R. Peterson, Youngung Jeong, Carlos N. Tomé, Michael D. Sangid
Ceramic-metal composites, or cermets, exhibit beneficial properties resulting in their use in many industrial applications. One challenge with cermets is mismatches in the coefficient of thermal expansion (CTE) values between the ceramic and metal phases that lead to residual stresses after processing, plasticity in the metal phase, internal stresses, and instability after thermal cycling. In order
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Monotonic tensile and cyclic deformation of a Ni-based single crystal superalloy with anisotropic microstructural rafting patterns at high temperature: Experiment and constitutive modelling Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-08 Y.S. Fan, L. Tan, X.G. Yang, W.Q. Huang, D.Q. Shi
Monotonic tensile and cyclic deformation behaviours are investigated under different microstructural rafting states of a SC Ni-based superalloy, with emphasis on the influences of the rafting extent, type and loading orientation. The deformed microstructures and the dislocation configurations are characterized to give a micro-based understanding on the varying of deformation behaviours due to rafting
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A predictive mesoscale model for continuous dynamic recrystallization Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-08 Franz Miller Branco Ferraz, Ricardo Henrique Buzolin, Stefan Ebenbauer, Thomas Leitner, Alfred Krumphals, Maria Cecilia Poletti
Thermomechanical processing of titanium alloys often requires complex routes to achieve the desired final microstructure. Recent advances in modeling and simulation tools have facilitated the optimization of these processing routes. However, existing models often fail to accurately predict microstructural changes at large deformations. In this study, we refine the physical principles of an existing
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Atomistic investigation of the interaction between an edge dislocation and 1/2<111> interstitial dislocation loops in irradiated tungsten Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Ping Yu, Guisen Liu, Yao Shen
By impeding dislocation motion, the irradiation-induced dislocation loops cause irradiation hardening and further embrittlement of plasma-facing tungsten in fusion reactors, leading to its performance degradation. But fundamental questions regarding the mechanisms remain to be clarified and predictive model for loop hardening remains to be built. In this paper, interactions between gliding edge dislocations
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Onset of dynamic void coalescence in porous ductile solids Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Z.G. Liu, W.H. Wong, T.F. Guo
This paper investigates void growth and coalescence in porous ductile solids under dynamic loading condition. A physical definition for the onset of void coalescence in porous ductile solids under dynamic loading is proposed. The onset is deemed to occur when the third invariant of the tensorial form of the Hill–Mandel condition attains a zero value. The definition allows for systematic investigations
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A temporal graph neural network for cross-scale modelling of polycrystals considering microstructure interaction Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-07 Yuanzhe Hu, Guowei Zhou, Myoung-Gyu Lee, Peidong Wu, Dayong Li
Machine learning (ML) based methods have achieved preliminary success in the constitutive modeling for single crystals or homogenized polycrystals with remarkable computational efficiency. However, existing ML-based constitutive models neglect grain-level anisotropy, which limits the accurate analysis of local effects. In the current work, a temporal graph neural network (TGNN) model is proposed to
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Pseudo-twin boundary improves flow stress and cyclic stability of TiAl single crystal Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-05 Yiqi Zhu, Min Yi, Wanlin Guo
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Understanding the effect of refractory metal chemistry on the stacking fault energy and mechanical property of Cantor-based multi-principal element alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-04 Prashant Singh, William Trehern, Brent Vela, Prince Sharma, Tanner Kirk, Zongrui Pei, Raymundo Arroyave, Michael C. Gao, Duane D. Johnson
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Optimization of tensile properties and anisotropy in a cryogenically treated laser additively manufactured high entropy alloy Int. J. Plasticity (IF 9.4) Pub Date : 2024-06-01 Yuan Tian, Yunzhuo Lu, R. Lakshmi Narayan
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Tuning generalized planar fault energies to enable deformation twinning in nanocrystalline aluminum alloys Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-31 Jingfan Zhang, Xueyong Pang, Yue Li, Shaolou Wei, Chao Yang, Shuaihang Pan, Binhan Sun, Dengshan Zhou, Xiaoxu Huang, Deliang Zhang, Gaowu Qin
As deformation twins have a profound impact on the plastic flow and mechanical properties of metallic materials, enhancing deformation twinning in face-centered cubic (FCC) metallic materials has long served as a unique microstructure design strategy to attain an extraordinary strength-ductility synergy. Deformation twinning, however, rarely occurs in pure FCC Al and its alloys since its generalized
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Structural characteristics of irrational Type-II Twin interfaces Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-28 Ahmed Sameer Khan Mohammed, Huseyin Sehitoglu
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Tri-functional co-nanoprecipitates enhanced cryogenic ductility by inducing structural heterogeneity and refining nano-twins in a low-stacking-fault-energy 17Mn steel Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-28 Xiaoli Chu, Yu Li, Chun Xu, Wei Li, Bin Fu, Xiaoshuai Jia
In this study, an innovative tri-functional co-nanoprecipitation strategy was employed to enhance the mechanical properties of a low stacking-fault energy (SFE) 17Mn steel for cryogenic applications. By combining severe cold deformation and subsequent annealing, a hierarchical structure emerged, featuring (Ti, Nb)C carbide (∼10 nm) and Cu-rich intermetallic (∼2 nm) in the austenitic matrix with heterogeneous
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A multiscale constitutive model of magnesium-shape memory alloy composite Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-25 Bo Xu, Aonan Su, Ziyi Wang, Chao Yu, Guozheng Kang
In this work, a multiscale constitutive model is established to describe the deformation behaviors of magnesium-shape memory alloy (Mg-SMA) composite in a wide temperature range and reveal the strengthening mechanism of SMA reinforcement on Mg. The model is established at the grain scale firstly and gradually transited to the macroscopic scale by employing a newly developed three-level scale transition
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Restraining geometrically-necessary dislocations to the active slip systems in a crystal plasticity-based finite element framework Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-23 Eralp Demir, Alvaro Martinez-Pechero, Chris Hardie, Edmund Tarleton
Strain gradients have been cast in the form of geometrically-necessary dislocations (GND) to relate the length-scale dependence of strength and to determine potential sites for failure initiation. The literature contains various different incompatibility measures, the main ones being: the total form (), the rate form for large displacements (), and the slip gradient form (). Here, these different approaches
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New insights into annealing induced hardening and deformation mechanisms in a selective laser melting austenitic stainless steel 316L Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-22 Zhiping Zhou, Jinlong Lv, Maolei Gui, Weiqi Yang
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Dynamic precipitation and recrystallization behavior during hot deformation of Al-Zn-Mg-Cu alloy: Experiment and modeling Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-21 Zinan Cheng, Cunsheng Zhang, Guannan Chu, Zhenyu Liu, Kuizhao Wang, Zijie Meng, Liang Chen, Lei Sun, Guoqun Zhao
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Calculating the grain size effect during strain hardening through a probabilistic analysis of the mean slip distance in polycrystals Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-21 Rafael Schouwenaars
Grain refinement is an important mechanism to produce stronger alloys. Strain hardening is an essential phenomenon in metal forming processes. The interaction between grain size and strain hardening is evident: a decrease in grain size causes an increase in ultimate tensile strength but a decrease in uniform elongation. The Kocks-Mecking (KM) model for strain hardening is based on the relationship
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Unraveling the Hall-Petch to inverse Hall-Petch transition in nanocrystalline high entropy alloys under shock loading Int. J. Plasticity (IF 9.4) Pub Date : 2024-05-19 Wanghui Li, Meizhen Xiang, Zachary Howard Aitken, Shuai Chen, Yilun Xu, Xinyu Yang, Qingxiang Pei, Jian Wang, Xiaoyan Li, Guglielmo Vastola, Huajian Gao, Yong-Wei Zhang
The transition from Hall-Petch (HP) to inverse Hall-Petch (IHP) behaviors associated with grain size reduction has been recognized for over two decades. However, the underlying mechanisms for such transition in high entropy alloys (HEAs) under dynamic loading, in which abundant deformation mechanisms could be activated either sequentially or simultaneously, remain unclear. Here, we investigate the