Effect of Hole Size on Single Crystal γ-TiAl Alloy Crack Propagation Based on Molecular Dynamics Simulation

IR > 机电工程学院

	Effect of Hole Size on Single Crystal γ-TiAl Alloy Crack Propagation Based on Molecular Dynamics Simulation
	Rui, Zhiyuan1,2 ; Cao, Hui1,2 ; Luo, Dechun1,2 ; Chen, Wenke 1; Yang, Li1,2 ; Yan, Changfeng1,2
	2017-09-01
发表期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
ISSN	1002185X
卷号	46 期号:9 页码:2505-2511
摘要	Molecular dynamics method has been applied to research the process of crack propagation of single crystal γ-TiAl. The atomic trajectory figure, energy evolution and the relationship between stress and strain were obtained to study the hole size effect. The results indicate that the initiation stress decreases with hole size increasing. After the crack combines with the hole, when R=0.4001 nm, crack occurs at the center of hole boundary after hole deformation, and it propagates along the direction of [100] until material fracture, and mother-child model is found; when R=0.8002 nm, crack occurs at one corner after hole deformation, and it propagates along the direction of [100] until material fracture; when R=1.2003 nm, crack occurs at two corners after hole deformation, and it propagates along the direction of [110] and[110], mother-child model is found at the direction of [110], and child crack occurs at boundary which combines with crack in this direction and propagates until material fracture. In addition the crack propagation is inhibited by the hole. © 2017, Science Press. All right reserved.
关键词	Crack propagation Deformation Fracture Molecular dynamics Single crystals Stress-strain curves Titanium alloys Atomic trajectories Energy evolutions Gamma tial alloys Hole size Molecular dynamics methods Molecular dynamics simulations Stress and strain TiAl alloy
收录类别	EI
语种	中文
出版者	Science Press
EI入藏号	20181304948821
EI主题词	Cracks
EI分类号	542.3 Titanium and Alloys - 801.4 Physical Chemistry - 933.1 Crystalline Solids - 951 Materials Science
来源库	Compendex
分类代码	542.3 Titanium and Alloys - 801.4 Physical Chemistry - 933.1 Crystalline Solids - 951 Materials Science
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114059
专题	机电工程学院土木工程学院马克思主义学院
作者单位	1.Lanzhou University of Technology, Lanzhou; 730050, China; 2.Digital Manufacturing Technology and Application of Key Laboratory of the Ministry of Education, Mechanical and Electrical Engineering College, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Rui, Zhiyuan,Cao, Hui,Luo, Dechun,et al. Effect of Hole Size on Single Crystal γ-TiAl Alloy Crack Propagation Based on Molecular Dynamics Simulation[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2017,46(9):2505-2511.
APA	Rui, Zhiyuan,Cao, Hui,Luo, Dechun,Chen, Wenke,Yang, Li,&Yan, Changfeng.(2017).Effect of Hole Size on Single Crystal γ-TiAl Alloy Crack Propagation Based on Molecular Dynamics Simulation.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,46(9),2505-2511.
MLA	Rui, Zhiyuan,et al."Effect of Hole Size on Single Crystal γ-TiAl Alloy Crack Propagation Based on Molecular Dynamics Simulation".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 46.9(2017):2505-2511.