孟毅 - 重庆大学 - 材料科学与工程学院

个人简介

学习经历 2009.10–2013.3 博士，东京大学，工学系研究科，机械工程专业 2006.9–2009.6 硕士，重庆大学，材料科学与工程学院，材料加工工程专业 2002.9–2006.6 学士，重庆大学，机械工程学院，材料成型及控制工程专业工作经历 2015.7-现在百人计划特聘研究员博士研究生导师，重庆大学，重庆，中国. 材料科学与工程学院 2014.4–2015.6 特任助理教授, 东京大学，东京，日本. 生产技术研究所. 2013.4–2014.3 博士后研究员, 东京大学，东京，日本. 生产技术研究所. 2009.10–2013.3 科研助理, 东京大学，东京，日本. 日本学术振兴会机械系统创新全球中心

研究领域

金属材料的半固态成型技术及其应用 a) 以钢铁合金为研究对象，从理论和实验两方面研究半固态成型技术对高合金钢的显微组织演变和机械力学性能的影响，从而对其成型参数进行控制进而获得优良的结构材料。 b) 以铝合金为研究对象，开发出时间可控的流变锻造成型技术，利用伺服压力机，通过调整成型工艺参数，获得了具有均匀微观组织和力学性能的铝合金产品。 c) 以镁合金为研究对象，探索其在半固态处理和冷成型过程中的显微组织演变规律，并通过实验和计算机模拟方法研究镁合金组织与冷成型性之间的关系。块体纳米金属材料的开发 a) 以钢铁合金为研究对象，研究其在高温剧烈塑性变形以及随后的冷却过程中的显微组织演变规律，理解纳米级超细晶粒的产生机理以及成型参数与冷却条件对纳米级超细晶粒的数量和分布的影响。 b) 将物理模拟方法与计算机模拟方法相结合，探索钢铁材料的化学成分成分、加工工艺、显微组织演化和机械力学性能之间的内在联系，并将其置入材料计算模型，开发钢铁材料的材料基因组。高温轧制成型以及金属板材成型的工艺分析及优化 a) 基于Orowan理论以及Hitchcock理论等古典塑性力学理论对超薄钢带的非对称轧制过程进行计算机模拟，研究其材料在轧制变形的不同阶段内应力应变场量分布，研究轧制后钢带翘曲的产生机理以及成型参数对产品质量的影响。 b) 利用扫描电子显微镜（FE-SEM）以及电子背散射衍射（EBSD）对成型后的金属材料的表征以及显微组织结构进行定性定量的分析。

近期论文

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Y. Meng, J. Zhang, Y. Yi, J. Zhou, S. Sugiyama, and J. Yanagimoto, "Study on the effects of forming conditions on microstructural evolution and forming behaviors of Cr-V-Mo tool steel during multi-stage thixoforging by physical simulation", Journal of Materials Processing Technology. In Press. 2 *Y. Meng, J. Lin, A. Yanagida, and J. Yanagimoto, "Modeling Static and Dynamic Kinetics of Microstructural Evolution in Hot Deformation of Fe-0.15C-0.2Si-1.4Mn-0.03Nb Alloy", Steel Research International. In Press. 3 Y. Meng, *Q. Chen, S. Sugiyama, and J. Yanagimoto, "Effects of reheating and subsequent rapid cooling on microstructural evolution and semisolid forming behaviors of extruded Mg–8.20Gd–4.48Y–3.34Zn–0.36Zr alloy", Journal of Materials Processing Technology. 247(2017), 192–203. 4 L. Shen, J. Zhou, Y. Xiong, J. Zhang, X. Lu, and *Y. Meng. "Study on the combination of cobalt-based superalloy and ferrous alloys by bimetal-layer surfacing technology in refabrication of large hot forging dies", Journal of Alloys and Compounds, 714(2017), 338-347. 5 *Y. Meng, S. Sugiyama, and J. Yanagimoto, "Microstructural Evolution during partial melting and semisolid forming behaviors of two kinds of hot rolled Cr-V-Mo tool steel",Journal of Materials Processing Technology. 215(2015), 203–212. 6 *Y. Meng, S. Fukushima, and J. Yanagimoto, "Cold formability of AZ31 wrought magnesium alloy undergoing semisolid spheroidization treatment ",Material Science and Engineering A. 624(2015), PP.146-156. 7 *Y. Meng, S. Sugiyama, and J. Yanagimoto, "鉄鋼材料の半溶融組織制御",SOKEIZAI. 56(2015), PP. 17-23. 8 *T. Cho,Y. Meng, S. Sugiyama, and J. Yanagimoto, "Separation Technology of Tramp Elements in Aluminium Alloy Scrap by Semisolid Processing ",International Journal of Precision Engineering and Manufacturing. . 16(2014), PP. 177-183. 9 *Y. Meng, S. Sugiyama, J-B. Tan and J. Yanagimoto, "Effects of forming conditions on homogeneity of microstructure and mechanical properties of A6061 aluminum alloy manufactured by time-dependent rheoforging on a mechanical servo press",Journal of Materials Processing Technology. 214(2014), 3037-3047. 10 *Y. Meng, S. Sugiyama and J. Yanagimoto, "Microstructure of Cr-V-Mo steel processed by recrystallization and partial melting and its effect on mechanical properties", Materials Transactions. 55(2014), PP. 921-929. 11 *Y. Meng, S. Sugiyama and J. Yanagimoto, "Effects of heat treatment on microstructure and mechanical properties of Cr-V-Mo steel processed by recrystallization and partial melting method", Journal of Materials Processing Technology, 214(2014), PP.87-96. 12 *Y. Meng, S. Sugiyama, M. Soltanpour and J. Yanagimoto, "Effects of predeformation and semi-solid processing on microstructure and mechanical properties of Cr-V-Mo steel",Journal of Materials Processing Technology, 213(2013), PP. 426-433 13 J. Yanagimoto, J-B. Tan, S. Sugiyama and *Y. Meng, "Controlled semisolid forging of aluminum alloys using mechanical servo press to manufacture products with homo- and heterogeneous microstructures", Materials Transactions, 54(2013), 1149-1154. 14 *Y. Meng, S. Sugiyama and J. Yanagimoto, "Effect of recrystallization and partial melting method on microstructural evolution of SKD61 tool steel in semi-solid state", Solid State Phenomena, 192 – 193(2013), PP. 209-214. 15 *S. Sugiyama, Y. Meng and J. Yanagimoto, "Refining and recycling of metal scraps by semisolid processing", Solid State Phenomena, 192 – 193(2013), PP. 494-499. 16 *Y. Meng, S. Sugiyama and J. Yanagimoto, "Microstructural evolution during RAP process and deformation behavior of semi-solid SKD61 tool steel", Journal of Materials Processing Technology, 212(2012), PP.1731-1741. 17 J. Zhou, *Y. Meng and Z. Men, "Research of 20Cr die forging trimming base on FEM simulation”,Journal of System Simulation, 2008, 20(19), PP. 5245-5248. 18 *Y. Meng, Z. Men, J. Zhou, L. Li and R. Huang, "Research of Die Forging Trimming Transformation", Hot Working Technology, 2008, 37(23), 13-17. (In Chinese) 19 *G. Quan, J. Zhou and Y. Meng, "Research of deformation mechanism for thick blank punching based on FEM simulation", Hot Working Technology, 2008, 37(15), 11-13. (In Chinese) 20 *J. Zhou, J. Li and Y. Meng, "Optimization for Die Forging of Automobile Crankshaft Based on CAD/CAE Technology", China Metal Forming Equipment & Manufacturing Technology. 2007, 42(4), 46-48. (In Chinese)