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
[1]   Applications of local crystal structure measures in experiment and simulation [J].
Ackland, GJ ;
Jones, AP .
PHYSICAL REVIEW B, 2006, 73 (05)
[2]  
[Anonymous], 1993, CIRP ANN-MANUF TECHN, DOI DOI 10.1016/S0007-8506(07)62396-8
[3]   Regulating the coarsening of the γ′ phase in superalloys [J].
Bian, Huakang ;
Xu, Xiandong ;
Li, Yunping ;
Koizumi, Yuichiro ;
Wang, Zhongchang ;
Chen, Mingwei ;
Yamanaka, Kenta ;
Chiba, Akihiko .
NPG ASIA MATERIALS, 2015, 7 :e212-e212
[4]   Interatomic potential to study plasticity in stainless steels: the FeNiCr model alloy [J].
Bonny, G. ;
Terentyev, D. ;
Pasianot, R. C. ;
Ponce, S. ;
Bakaev, A. .
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING, 2011, 19 (08)
[5]   A study of the interactive effects of strain, strain rate and temperature in severe plastic deformation of copper [J].
Brown, Travis L. ;
Saldana, Christopher ;
Murthy, Tejas G. ;
Mann, James B. ;
Guo, Yang ;
Allard, Larry F. ;
King, Alexander H. ;
Compton, W. Dale ;
Trumble, Kevin P. ;
Chandrasekar, Srinivasan .
ACTA MATERIALIA, 2009, 57 (18) :5491-5500
[6]   Characterization of White Layer Generated when Turning Aged Inconel 718 [J].
Bushlya, V. ;
Zhou, J. M. ;
Lenrick, F. ;
Avdovic, P. ;
Stahl, J-E .
1ST CIRP CONFERENCE ON SURFACE INTEGRITY (CSI), 2011, 19
[7]   Advancing cutting technology [J].
Byrne, G ;
Dornfeld, D ;
Denkena, B .
CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2003, 52 (02) :483-507
[8]   Characteristics of "dynamic hard particles" in nanoscale ductile mode cutting of monocrystalline silicon with diamond tools in relation to tool groove wear [J].
Cai, M. B. ;
Li, X. P. ;
Rahman, M. .
WEAR, 2007, 263 :1459-1466
[9]   Study of the mechanism of nanoscale ductile mode cutting of silicon using molecular dynamics simulation [J].
Cai, M. B. ;
Li, X. P. ;
Rahman, M. .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2007, 47 (01) :75-80
[10]  
Chen T, 2015, CHINESE J MECH ENG, V51, P182, DOI DOI 10.3901/JME.2015.23.182