Effect of Twin Boundaries on Supersonic Fine Particle Bombardment of TiAl Alloys via Molecular Dynamics

doi:10.12442/j.issn.1002-185X.20230323

IR > 机电工程学院

	Effect of Twin Boundaries on Supersonic Fine Particle Bombardment of TiAl Alloys via Molecular Dynamics
	Cao Hui1,2 ; Yang Wenle 1; Zhou Baocheng 1; Yu Zhaoliang 1; Wang Jingqi 1; Li Haiyan1,2 ; Liu Jianhui1,2 ; Feng Ruicheng1,2
	2023-12
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	52 期号:12 页码:4073-4085
摘要	TiAl alloys have become one of the most promising high-temperature lightweight structural materials in aerospace and other fields because of low density, high specific strength, high-temperature oxidation resistance and other properties. However, due to the brittleness of them, it is easy to introduce micro-cracks, holes and other defects in the forming process, which seriously affect the mechanical properties. For this reason, supersonic fine particle bombardment (SFPB), one of the surface modification techniques, was used to investigate the effect of twin boundaries (TBs) on the mechanical properties and deformation behaviour of TiAl alloys. The findings demonstrate that when the number of TBs increases, the yield strength of models with various numbers of TBs falls. The closer the location of TB to the upper surface of model, the lower the yield strength of the material. As the number of TBs increases, the obstruction of dislocation movement by TBs becomes more evident and the degree of plastic deformation of the surface of the model after bombardment becomes greater, making the material more susceptible to fracture. The closer the TB to the upper surface of the material, the more evident the inhibition of dislocation growth by the twin, which in turn affects the strength of the material. Deformation failure of the model is the combination result between dislocations and dislocations, dislocations and twins and other defects.
关键词	TiAl alloys SFPB twin boundary molecular dynamics mechanical properties
DOI	10.12442/j.issn.1002-185X.20230323
收录类别	SCIE
语种	英语
资助项目	National Natural Science Foundation of China [52065036]; Key Program of Natural Science Foundation of Gansu [23JRRA760]; Natural Science Foundation of Gansu [22JR5RA298]; Hongliu First-Class Disciplines Development Program of Lanzhou University of Technology
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001179368600008
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
原始文献类型	Article
EISSN	1875-5372
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/169884
专题	机电工程学院土木工程学院
通讯作者	Feng Ruicheng
作者单位	1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Digital Mfg Technol & Applicat, Minist Educ, Lanzhou 730050, Peoples R 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,Yang Wenle,Zhou Baocheng,et al. Effect of Twin Boundaries on Supersonic Fine Particle Bombardment of TiAl Alloys via Molecular Dynamics[J]. RARE METAL MATERIALS AND ENGINEERING,2023,52(12):4073-4085.
APA	Cao Hui.,Yang Wenle.,Zhou Baocheng.,Yu Zhaoliang.,Wang Jingqi.,...&Feng Ruicheng.(2023).Effect of Twin Boundaries on Supersonic Fine Particle Bombardment of TiAl Alloys via Molecular Dynamics.RARE METAL MATERIALS AND ENGINEERING,52(12),4073-4085.
MLA	Cao Hui,et al."Effect of Twin Boundaries on Supersonic Fine Particle Bombardment of TiAl Alloys via Molecular Dynamics".RARE METAL MATERIALS AND ENGINEERING 52.12(2023):4073-4085.