Uniaxial Strain-Induced Grain Boundary Migration in Titanium

被引：4

作者：

Sun, Tao ^{[1
]}

Tu, Aidong ^{[2
]}

Wang, Hao ^{[3
]}

Li, Shu-Jun ^{[2
]}

Peng, Hui ^{[4
]}

Li, Jian-Ping ^{[1
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

[3] Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China

[4] Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Sichuan, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2021年 / 34卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Grain boundary; Titanium; Migration; Dislocation; Twinning;

D O I：

10.1007/s40195-021-01225-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The mechanical response of a bi-crystal model with a 90 degrees grain boundary under external compressive and tensile loading parallel to the boundary plane normal was investigated with molecular dynamics simulations. The grain boundary was found to migrate along two opposite directions upon compressive and tensile straining, with the formation of inter-connected coherent twin boundary and basal/prismatic boundary. The atomic details of such grain boundary migration were unraveled, which indicated the role of interface dislocations. The temperature effect was also discussed.

引用

页码：1715 / 1720

页数：6

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