Effect of γ/α2 Phase Interface on Supersonic Fine Particle Bombardment of TiAl Alloy by Molecular Dynamics Simulation

doi:10.12442/j.issn.1002-185X.20230292

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	Effect of γ/α2 Phase Interface on Supersonic Fine Particle Bombardment of TiAl Alloy by Molecular Dynamics Simulation
其他题名	γ/α2相界面对 TiAl 合金超音速微粒轰击影响的分子动力学模拟
	Cao, Hui1,2 ; Wang, Jingqi 1; Zhou, Baocheng 1; Yu, Zhaoliang 1; Yang, Wenle 1; Li, Haiyan1,2 ; Liu, Jianhui1,2 ; Feng, Ruicheng1,2
	2024-02
发表期刊	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
ISSN	1002-185X
卷号	53 期号:2 页码:396-408
摘要	In order to investigate the effect of γ/α2 phase interface on the deformation mechanism and mechanical properties of TiAl alloy during bombardment process, the supersonic fine particle bombardment of dual-phase TiAl alloy was simulated by molecular dynamics. Results show that the impact deformation mechanisms of γ/α2 models with different thickness ratios are different, and the deformation is mainly concentrated at the γ phase and interface. With decreasing the γ phase thickness, the dislocations in contact with the phase interface are firstly absorbed by the mismatched dislocation network, then they are nucleated at the phase interface, and eventually the dislocations pass through the phase interface, entering the α2 phase. Shockley dislocation is the main dislocation type in the impact process, and incomplete stacking fault tetrahedron forms in the specimen. After impact, uniaxial tensile simulation and nano-indentation simulation were conducted to measure the strength and surface hardness of the specimens. The main deformation mechanisms of specimens with different thickness ratios are the phase transformation, twins, and stacking faults during tensile process. Compared with other specimens, TiAl alloy with thickness ratio of 1:3 has the highest yield strength, the highest hardness, and the highest elastic modulus after impact. Copyright © 2024, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved.
关键词	Binary alloys Hardness Molecular dynamics Phase interfaces Stacking faults Titanium alloys Bombardment process Deformation mechanism Different thickness Dual phase Dynamics simulation Fine-particles Particle bombardment Thickness ratio TiAl alloy Tial/ti3al
DOI	10.12442/j.issn.1002-185X.20230292
收录类别	EI
语种	英语
出版者	Science Press
EI入藏号	20241015681308
EI主题词	Aluminum alloys
EI分类号	541.2 Aluminum Alloys ; 542.3 Titanium and Alloys ; 801.4 Physical Chemistry ; 933.1.1 Crystal Lattice ; 951 Materials Science
原始文献类型	Journal article (JA)
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169959
专题	土木工程学院机电工程学院
通讯作者	Feng, Ruicheng
作者单位	1.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Digital Manufacturing Technology and Application, Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
通讯作者单位	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	Cao, Hui,Wang, Jingqi,Zhou, Baocheng,et al. Effect of γ/α2 Phase Interface on Supersonic Fine Particle Bombardment of TiAl Alloy by Molecular Dynamics Simulation[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2024,53(2):396-408.
APA	Cao, Hui.,Wang, Jingqi.,Zhou, Baocheng.,Yu, Zhaoliang.,Yang, Wenle.,...&Feng, Ruicheng.(2024).Effect of γ/α2 Phase Interface on Supersonic Fine Particle Bombardment of TiAl Alloy by Molecular Dynamics Simulation.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,53(2),396-408.
MLA	Cao, Hui,et al."Effect of γ/α2 Phase Interface on Supersonic Fine Particle Bombardment of TiAl Alloy by Molecular Dynamics Simulation".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 53.2(2024):396-408.