当前位置:
X-MOL 学术
›
J. Alloys Compd.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Balanced mechanical properties of Al0.5CoCrFeNiTi0.1 high entropy alloy under extreme environments from cryogenic temperature to 800 ℃
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-12-20 , DOI: 10.1016/j.jallcom.2024.178199 Kanghyun Park, Hamza Iftikhar, Seunghwan Shin, Yunjong Jung, Kangjin Lee, Chanho Lee, Gian Song
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-12-20 , DOI: 10.1016/j.jallcom.2024.178199 Kanghyun Park, Hamza Iftikhar, Seunghwan Shin, Yunjong Jung, Kangjin Lee, Chanho Lee, Gian Song
The advancement of modern industry requires the development of high-performance materials capable of operating in extreme environments, such as at cryogenic and high temperatures. Face-centered cubic (FCC) high entropy alloys (HEAs) show remarkable mechanical properties at low temperatures caused by nano-twinning. However, their strength is insufficient at both room and elevated temperatures. To address this issue, we attempted to develop Al0.5CoCrFeNiTi0.1 HEA, which consists of FCC matrix and L21 precipitates, with excellent mechanical properties at various temperatures. The evolutions of microstructures and mechanical properties were examined by experimental efforts coupled with theoretical approaches, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), tensile tests at room temperature and theoretical strengthening calculations. Additional tensile tests were conducted at cryogenic (-160 ℃) and high temperatures (600 ~ 800 ℃). The ultimate tensile strength (UTS) at room temperature was measured as 1097.5 MPa, while values at -160, 600, 700 and 800 ℃ were identified to be 1398.0, 707.2, 548.2 and 332.7 MPa, respectively. These results revealed outstanding mechanical properties compared to other FCC-based alloys.
更新日期:2024-12-20