合金
材料科学
极限抗拉强度
延伸率
高熵合金
冶金
拉伸试验
加工硬化
延展性(地球科学)
微观结构
蠕动
作者
Yiwen Chen,Ziqi Xu,Meng Wang,Yunkai Li,Chao Wu,Ying Yang
标识
DOI:10.1016/j.msea.2020.139774
摘要
A ductile V0.5Nb0.5ZrTi refractory high-entropy alloy (RHEA) with relatively low density (~6 g/cm−3) is investigated, designed by controlling its valence electron concentration. The homogenized alloy exhibits a stable BCC structure, significant work hardening rate and considerable tensile stress (787 MPa) and elongation (21.9%). The solid-solution strengthening effect is estimated to be ~575 MPa by simplifying into a pseudo-binary alloy, which is in accordance with the test results. These findings can inspire a new strategy to design RHEA with a balanced matching of strength and ductility.
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