Effect of Cutting Depth on Mechanical Properties of Single Crystal γ-TiAl Alloy | |
Li, Haiyan1,2; Qiao, Haiyang1; Feng, Ruicheng1,2; Wang, Qi1; Wang, Maomao1; Li, Jianhua1,2 | |
刊名 | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
2020-06-01 | |
卷号 | 49期号:6页码:1931-1937 |
关键词 | Crystallization Molecular dynamics Nucleation Single crystals Stress-strain curves Tensile strength Titanium alloys Yield stress Dislocation nucleation Fracture surfaces Gamma tial alloys Large-scale molecular dynamics Micro-defects Monocrystalline Port position Tensile process |
ISSN号 | 1002185X |
英文摘要 | The nano-cutting and tensile model of monocrystalline γ-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. Copyright © 2020, Northwest Institute for Nonferrous Metal Research. Published by Science Press. All rights reserved. |
语种 | 中文 |
出版者 | Rare Metals Materials and Engineering Press |
WOS记录号 | WOS:000552452000015 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/115430] |
专题 | 机电工程学院 电气工程与信息工程学院 |
作者单位 | 1.Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou; 730050, 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 γ-TiAl Alloy[J]. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,2020,49(6):1931-1937. |
APA | Li, Haiyan,Qiao, Haiyang,Feng, Ruicheng,Wang, Qi,Wang, Maomao,&Li, Jianhua.(2020).Effect of Cutting Depth on Mechanical Properties of Single Crystal γ-TiAl Alloy.Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering,49(6),1931-1937. |
MLA | Li, Haiyan,et al."Effect of Cutting Depth on Mechanical Properties of Single Crystal γ-TiAl Alloy".Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering 49.6(2020):1931-1937. |
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