Effect of the potential function and strain rate on mechanical behavior of the single crystal Ni-based alloys:A molecular dynamics study

• 作者: Qian Yin Ye-Da Lian Rong-Hai Wu Li-Qiang Gao Shu-Qun Chen Zhi-Xun Wen
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: GENERAL
• 页码范围: 231-236
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/abff22

摘要

Molecular dynamics has been widely used to study the fundamental mechanism of Ni-based superalloys.However,the effect of the potential function and strain rate on mechanical behavior has rarely been mentioned in the previous molecular dynamics studies.In the present work,we show that the potential function of molecular dynamics can dramatically influence the simulation results of single crystal Ni-based superalloys.The microstructure and mechanical behavior of single crystal Ni-based superalloys under four commonly used potential functions are systematically compared.A most suitable potential function for the mechanical deformation is critically selected,and based on it,the role of strain rate on the mechanical deformation is investigated.