An Atomistic Modeling Study of the Relationship between Critical Resolved Shear Stress and Atomic Structure Distortion in FCC High Entropy Alloys-Relationship in Random Solid Solution and Chemical-Short-Range-Order Alloys -

被引：29

作者：

Ali, Md Lokman ^{[1
,2
]}

Shinzato, Shuhei ^{[1
]}

Wang, Vei ^{[3
]}

Shen, Zeqi ^{[1
]}

Du, Jun-ping ^{[1
,4
]}

Ogata, Shigenobu ^{[1
,4
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Dept Mech Sci & Bioengn, Toyonaka, Osaka 5608531, Japan

[2] Pabna Univ Sci & Technol, Dept Phys, Pabna 6600, Bangladesh

[3] Xian Univ Technol, Dept Appl Phys, Xian 710054, Peoples R China

[4] Kyoto Univ, Ctr Element Strategy Initiat Struct Mat ESISM, Kyoto 6068501, Japan

来源：

MATERIALS TRANSACTIONS | 2020年 / 61卷 / 04期

关键词：

molecular dynamics; high entropy alloy; critical resolved shear stress; root-mean-square-atomic-displacement; Lennard-Jones potential; chemical-short-range-order; WEAR BEHAVIOR; FRICTION;

D O I：

10.2320/matertrans.MT-MK2019007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The relationship between the critical resolved shear stress (CRSS) at T= 0 K and the atomic structure distortion was studied using molecular dynamics (MD) simulation with atomic distortion (root-mean-square-atomic-displacement (RMSAD)) controlled Lennard-Jones (LJ) interatomic potentials for different face-centered-cubic (FCC) high entropy alloy (HEA) systems, such as ternary, quaternary, and quinary alloy systems. We demonstrated that an almost universal linear relationship exists between CRSS and RMSAD for the random solid solution (RSS) of these alloy systems. The universality was also confirmed by a more realistic embedded atom method (EAM) potential. However, alloy systems that have a chemical-short-range-order (CSRO) do not follow this universal linear relationship.

引用

页码：605 / 609

页数：5

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