Wear mechanism of diamond-cutting tool in nano-cutting polycrystalline γ-TiAl alloy based on molecular dynamics simulation

doi:10.1016/j.jmapro.2024.03.071

IR > 机电工程学院

	Wear mechanism of diamond-cutting tool in nano-cutting polycrystalline γ-TiAl alloy based on molecular dynamics simulation
	Ren, Zehai 1,2; Feng, Ruicheng1,3 ; Cao, Hui1,3 ; Zhou, Baocheng 1; Li, Haiyan1,3 ; Lei, Chunli1,3
	2024-06-15
发表期刊	Journal of Manufacturing Processes
ISSN	1526-6125
卷号	119 页码:118-129
摘要	The machining of γ-TiAl is susceptible to tool wear, and investigations into tool-wear mechanisms can contribute to enhancing machining efficiency and optimizing the surface integrity of workpieces. In this study, a molecular-dynamics method is employed to simulate the cutting process of polycrystalline titanium–aluminum alloys using a single-crystal diamond tool. The findings suggest that tool wear is induced by cutting forces and plastic deformation, with amorphization and diffusive wear as the primary mechanisms. Plastic deformation within the matrix facilitates interactions between internal dislocations in the grains, thus resulting in work hardening at the surface layer, increased cutting forces, and heightened susceptibility of the cutting edge to wear due to plastic deformation. Moreover, elevated temperatures and pressures in the cutting contact area induce atomic amorphization, which reduces both the strength and hardness of the tool while triggering structural phase transitions for certain atoms. Consequently, lattice distortion occurs within this region, thus causing matrix atoms to diffuse into the tool. The combined effect of amorphization and diffusion significantly exacerbates tool wear. This investigation provides valuable insights into wear mechanisms and guidance for enhancing the quality of γ-TiAl alloy. © 2024 The Society of Manufacturing Engineers
关键词	Aluminum alloys Amorphization Atoms Crystal atomic structure Crystal cutting Diamond cutting tools Plastic deformation Polycrystalline materials Single crystals Strain hardening Titanium alloys Wear of materials Amorphizations Cutting forces Diamond tool Dynamics simulation Nano cutting Polycrystalline TiAl alloy Tool wear Wear mechanisms Γ-tial alloy
DOI	10.1016/j.jmapro.2024.03.071
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20241415841519
EI主题词	Molecular dynamics
EI分类号	537.1 Heat Treatment Processes ; 541.2 Aluminum Alloys ; 542.3 Titanium and Alloys ; 801.4 Physical Chemistry ; 802.3 Chemical Operations ; 931.2 Physical Properties of Gases, Liquids and Solids ; 931.3 Atomic and Molecular Physics ; 933.1 Crystalline Solids ; 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/170291
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.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Mechanical and Electronical Engineering, Guilin University of Aerospace Technology, Guilin; 541004, China; 3.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	Ren, Zehai,Feng, Ruicheng,Cao, Hui,et al. Wear mechanism of diamond-cutting tool in nano-cutting polycrystalline γ-TiAl alloy based on molecular dynamics simulation[J]. Journal of Manufacturing Processes,2024,119:118-129.
APA	Ren, Zehai,Feng, Ruicheng,Cao, Hui,Zhou, Baocheng,Li, Haiyan,&Lei, Chunli.(2024).Wear mechanism of diamond-cutting tool in nano-cutting polycrystalline γ-TiAl alloy based on molecular dynamics simulation.Journal of Manufacturing Processes,119,118-129.
MLA	Ren, Zehai,et al."Wear mechanism of diamond-cutting tool in nano-cutting polycrystalline γ-TiAl alloy based on molecular dynamics simulation".Journal of Manufacturing Processes 119(2024):118-129.