Study on phase transformation in cutting Ni-base superalloy based on molecular dynamics method

被引:8
作者
Hao, ZhaoPeng [1 ]
Lou, ZaiZhen [1 ]
Fan, YiHang [1 ]
机构
[1] ChangChun Univ Technol, Sch Mechatron Engn, Changchun 130012, Peoples R China
基金
中国国家自然科学基金;
关键词
Nickel-based single crystal alloy; nanocutting; phase transformation; lattice structure; atomic stress; SUBSURFACE DAMAGE; SILICON-NITRIDE; WHITE LAYERS; DEFORMATION; SIMULATION; MECHANISM; STRENGTH; EVOLUTION; BEHAVIOR; CARBIDE;
D O I
10.1177/0954406220951240
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Nickel-based single crystal alloys are widely used in aerospace and other important fields of national defense due to their excellent properties. Phase transformation occurs during high-speed cutting of nickel-based single crystal alloy, which seriously affects the surface quality. It is of great significance to carry out theoretical research on phase transformation for improving the machining quality of nickel-based alloy. In this paper, molecular dynamics method is used to study the nano-cutting of single crystal nickel-based alloy with silicon nitride ceramic tool. The mechanism of phase transformation and the effect of cutting speed on phase transformation in workpieces are studied in detail. The nano-cutting model is established. Morse potential functions for molecular dynamics simulation are calculated, and EAM and Tersoff potential functions are selected. The effect of cutting speed on phase transformation was studied by using radial distribution function, coordination number analysis, common neighbor analysis, and the deep reasons for the sharp change of lattice structure were analyzed from many aspects. Finally, in order to verify the universality of the research results and explore the new properties of compression, nano compression (the same strain rate as the nano cutting process) was simulated. The results show that the increase of cutting speed leads to the increase of hydrostatic stress, the increase of energy in crystal and the rise of cutting temperature. As a result, the change of lattice structure becomes more and more intense, and the conversion rate of different crystal structures increases greatly.
引用
收藏
页码:2065 / 2086
页数:22
相关论文
共 87 条
[11]   White layers and thermal modeling of hard turned surfaces [J].
Chou, YK ;
Evans, CJ .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 1999, 39 (12) :1863-1881
[12]   Nanoindentation experiments with different loading rate distinguish the mechanism of incipient plasticity [J].
Chrobak, D. ;
Kim, Kwang-Ho ;
Kurzydlowski, K. J. ;
Nowak, R. .
APPLIED PHYSICS LETTERS, 2013, 103 (07)
[13]   SILICON NANOPARTICLES Isolation leads to change [J].
Cross, Graham L. W. .
NATURE NANOTECHNOLOGY, 2011, 6 (08) :467-468
[14]   Nano-machining of materials: understanding the process through molecular dynamics simulation [J].
Cui, Dan-Dan ;
Zhang, Liang-Chi .
ADVANCES IN MANUFACTURING, 2017, 5 (01) :20-34
[15]   Comparison of subsurface damages on mono-crystalline silicon between traditional nanoscale machining and laser-assisted nanoscale machining via molecular dynamics simulation [J].
Dai, Houfu ;
Li, Shaobo ;
Chen, Genyu .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2018, 414 :61-67
[16]  
Dai Sujiang, 2006, China Mechanical Engineering, V17, P1007
[17]  
DAS SK, 1977, J PHYS F MET PHYS, V7, P5, DOI 10.1088/0305-4608/7/1/011
[18]   On Signature-based Grobner Bases over Euclidean Rings [J].
Eder, Christian ;
Pfister, Gerhard ;
Popescu, Adrian .
PROCEEDINGS OF THE 2017 ACM INTERNATIONAL SYMPOSIUM ON SYMBOLIC AND ALGEBRAIC COMPUTATION (ISSAC'17), 2017, :141-148
[19]  
Faken D., 1994, Computational Materials Science, V2, P279, DOI 10.1016/0927-0256(94)90109-0
[20]   Work hardening mechanism based on molecular dynamics simulation in cutting Ni-Fe-Cr series of Ni-based alloy [J].
Fan, YiHang ;
Wang, WenYuan ;
Hao, ZhaoPeng ;
Zhan, ChunYong .
JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 819