Effect of Cutting Depth on Mechanical Properties of Single Crystal gamma-TiAl Alloy

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Effect of Cutting Depth on Mechanical Properties of Single Crystal gamma-TiAl Alloy
	Li Haiyan 1,2; Qiao Haiyang 2; Feng Ruicheng 1,2; Wang Qi 2; Wang Maomao 2; Li Jian-hua 1,2
刊名	RARE METAL MATERIALS AND ENGINEERING
	2020-06-01
卷号	49 期号:6 页码:1931-1937
关键词	nano-cutting tensile molecular dynamics simulations lattice transformation dislocation
ISSN号	1002-185X
英文摘要	The nano-cutting and tensile model of monocrystalline gamma-TiAl alloy was established by large scale molecular dynamics simulations method. The effect of different cutting depths on tensile process of workpiece was analyzed. For one thing, the relationship between lattice transformation and micro-defect evolution was studied. For another, the influences of cutting depths on stress-strain curve, the nucleation of dislocation and position of fracture surface were discussed. The results show that the amount of lattice transition rises with the increases of cutting depth and it is consistent with micro-defect evolution during nano-cutting. Within a certain range of cutting depth, the yield stress and elastic modulus of workpiece are improved correspondingly. In addition, cutting depths have great influence on the position of dislocation nucleation and fracture surface of workpiece during tensile process. The dislocation of machined workpiece is nucleated at subsurface, while dislocation of unmachined workpiece is nucleated at edge of workpiece. The port position of workpiece is closer to drawing end with the increase of cutting depth.
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:000552452000015
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/155169]
专题	机电工程学院电气工程与信息工程学院
作者单位	1.State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China 2.Lanzhou Univ Technol, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	Li Haiyan,Qiao Haiyang,Feng Ruicheng,et al. Effect of Cutting Depth on Mechanical Properties of Single Crystal gamma-TiAl Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49(6):1931-1937.
APA	Li Haiyan,Qiao Haiyang,Feng Ruicheng,Wang Qi,Wang Maomao,&Li Jian-hua.(2020).Effect of Cutting Depth on Mechanical Properties of Single Crystal gamma-TiAl Alloy.RARE METAL MATERIALS AND ENGINEERING,49(6),1931-1937.
MLA	Li Haiyan,et al."Effect of Cutting Depth on Mechanical Properties of Single Crystal gamma-TiAl Alloy".RARE METAL MATERIALS AND ENGINEERING 49.6(2020):1931-1937.