期刊
MATERIALIA
卷 9, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mtla.2020.100628
关键词
Equiatomic solid-solution alloys; High entropy alloys; Dislocation core structure; Critical resolved shear stress; Chemically complex alloys
资金
- U.S. National Science Foundation [DMR- 1807708]
- China Scholarship Council (CSC) Fellowship
- National Natural Science Foundation of China [11932004]
The elastic properties, core structures, critical resolved shear stresses (CRSSs), and mobility of 1/2(110) edge dislocations in NiCoFe and NiCoFeCu equiatomic solid-solution alloys was predicted using molecular statics and dynamics simulations using two different embedded atom method (EAM) potentials. In particular, the Johnshon-Zhou potential is in good agreement with experimental measurements and observations. The calculated average intrinsic stacking fault energies for both alloys were 17 and 28 mJ/m(2), and the mean stacking fault width in the absence of external stresses were 70 and 51 angstrom, respectively. The CRSSs for both alloys were between 5060, 40-50, and 30-40 MPa at 10, 150, and 300 K, respectively. These results are in reasonable agreement with available experimental measurements and theoretical predictions. The atomistic simulations presented here can be used to predict and develop face-centered cubic chemically complex alloys with superior strength for various applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据