Effects of Al Content on the Mechanical Properties of Single Crystal TiAl Alloy

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	Effects of Al Content on the Mechanical Properties of Single Crystal TiAl Alloy
	Cao Hui 1,2; Rui Zhiyuan 1,2; Feng Ruicheng 1,2; Chen Wenke 1; Feng Yuxi 1,2; Yan Changfeng 1,2
刊名	RARE METAL MATERIALS AND ENGINEERING
	2019-04
卷号	48 期号:4 页码:1102-1108
关键词	TiAl specimen Al content molecular dynamics plasticity crack propagation
ISSN号	1002-185X
英文摘要	The effects of Al content on the mechanical properties and the crack propagation mechanism of single crystal TiAl was discussed using molecular dynamics simulation. The stress-strain curves and evolution process of the defects were obtained under different Al contents. The results show that the Al content would affect the elastic modulus and the strength of the TiAl alloy. Defects such as stacking faults, dislocations and vacancies and their migrations result in better plasticity of TiAl when the Al content is below 45 at%. However, the specimen exhibits obvious brittleness with the Al content greater than 45 at%. Furthermore, the plasticity deformation dominates the main mode under the low Al content, while the crack fracture presents brittleness when the Al content is high. Therefore, Al contents would affect the mechanical proprieties of TiAl alloy, i.e. the plasticity of TiAl would increase with the decreasing Al content. In addition, the mechanism of crack propagation would vary with the change of Al content.
资助项目	National Natural Science Foundation of China[51665030] ; Research Project of Gansu Province, China[2016A-012] ; Natural Science Foundation of Gansu Province, China[17JR5RA114]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000467321400011
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/31982]
专题	土木工程学院机电工程学院石油化工学院
通讯作者	Rui Zhiyuan
作者单位	1.Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Minist Educ, Key Lab Digital Mfg Technol & Applicat, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Cao Hui,Rui Zhiyuan,Feng Ruicheng,et al. Effects of Al Content on the Mechanical Properties of Single Crystal TiAl Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(4):1102-1108.
APA	Cao Hui,Rui Zhiyuan,Feng Ruicheng,Chen Wenke,Feng Yuxi,&Yan Changfeng.(2019).Effects of Al Content on the Mechanical Properties of Single Crystal TiAl Alloy.RARE METAL MATERIALS AND ENGINEERING,48(4),1102-1108.
MLA	Cao Hui,et al."Effects of Al Content on the Mechanical Properties of Single Crystal TiAl Alloy".RARE METAL MATERIALS AND ENGINEERING 48.4(2019):1102-1108.