CN 41-1243/TG ISSN 1006-852X
Volume 42 Issue 4
Aug.  2022
Turn off MathJax
Article Contents
JIANG Junqiang, LIANG Guiqiang, SUN Lihui, DONG Zhongqi. Influence mechanism of machining parameters on surface quality and subsurface damage of single crystal γ-TiAl[J]. Diamond &Abrasives Engineering, 2022, 42(4): 457-466. doi: 10.13394/j.cnki.jgszz.2022.0001
Citation: JIANG Junqiang, LIANG Guiqiang, SUN Lihui, DONG Zhongqi. Influence mechanism of machining parameters on surface quality and subsurface damage of single crystal γ-TiAl[J]. Diamond &Abrasives Engineering, 2022, 42(4): 457-466. doi: 10.13394/j.cnki.jgszz.2022.0001

Influence mechanism of machining parameters on surface quality and subsurface damage of single crystal γ-TiAl

doi: 10.13394/j.cnki.jgszz.2022.0001
  • Received Date: 2022-01-25
  • Accepted Date: 2022-04-19
  • Rev Recd Date: 2022-04-09
  • To study the influence mechanism of machining process parameters on surface quality and subsurface damage of nano-cutting single crystal γ-TiAl alloy, molecular dynamics(MD) was used as the basic theory. Using a non-rigid diamond tool, a three-dimensional nano-cutting model was established, and the influence of different cutting speeds and depths of cut on the surface and subsurface structure were analyzed in detail by studying chip volume, surface roughness, workpiece hydrostatic pressure distribution, dislocation density, dislocation evolution, and phase transitions atomic number. The results showed that with the increase of cutting speed, the chip volume increases, the machining efficiency improves and there is a critical value of the cutting speed of 100 m/s, the surface roughness first decreases and then increases and there is also a critical value of the cutting speed of 100 m/s, the complexity of dislocations reduces, the density of dislocations decreases, and the degree of plastic deformation increases. However, with the increase of cutting depth, the chip volume increases, the machining efficiency improves, the surface roughness, the density of dislocations and the degree of plastic deformation increase significantly, and it was found that the dislocations were mainly distributed in front of and below the tool during cutting process, and there were V-shaped dislocations and stair rod dislocations in the direction of 45o in front of the tool, as well as dislocations reacting with each other, and stable defects such as vacancies and atomic clusters remained after the cutting process.

     

  • loading
  • [1]
    曹卉. 单晶γ-TiAl合金的变形与断裂机制研究 [D]. 兰州: 兰州理工大学, 2020.

    CAO Hui. Deformation and fracture mechanism of single crystal γ-TiAl [D]. Lanzhou: Lanzhou University of Technology, 2020.
    [2]
    HAN X, XU D D, AXINTE D, et al. On understanding the specific cutting mechanisms governing the workpiece surface integrity in metal matrix composites machining [J]. Journal of Materials Processing Technology,2021,288:116875. doi: 10.1016/j.jmatprotec.2020.116875
    [3]
    李颂华, 韩光田, 孙健, 等. 金刚石砂轮磨削轴承用ZrO2陶瓷表面质量研究 [J]. 金刚石与磨料磨具工程,2019,39(6):75-81.

    LI Songhua, HAN Guangtian, SUN Jian, et al. Study on surface quality of zirconia ceramics used for bearing ground by diamond grinding wheel [J]. Diamond & Abrasives Engineering,2019,39(6):75-81.
    [4]
    HAN J J, HAO X Q, LI L, et al. Investigation on surface quality and burr generation of high aspect ratio (HAR) micro-milled grooves [J]. Journal of Manufacturing Processes,2020,52:35-43. doi: 10.1016/j.jmapro.2020.01.041
    [5]
    ANWAR S, AHMED N, PERVAIZ S, et al. On the turning of electron beam melted gamma-TiAl with coated and uncoated tools: A machinability analysis [J]. Journal of Materials Processing Technology,2020,282:116664. doi: 10.1016/j.jmatprotec.2020.116664
    [6]
    CHENG Y, YUAN Q, ZHANG B, et al. Study on turning force of γ-TiAl alloy [J]. International Journal of Advanced Manufacturing Technology,2019,105(5/6):2393-2402.
    [7]
    FAN Y H, WANG W Y, HAO Z P, et al. Work hardening mechanism based on molecular dynamics simulation in cutting Ni–Fe–Cr series of Ni-based alloy [J]. Journal of Alloys and Compounds,2020,819:153331. doi: 10.1016/j.jallcom.2019.153331
    [8]
    夏斯伟, 周海, 徐晓明, 等. 单晶材料纳米加工的分子动力学模拟研究进展 [J]. 金刚石与磨料磨具工程,2018,38(5):78-86. doi: 10.13394/j.cnki.jgszz.2018.5.0015

    XIA Siwei, ZHOU Hai, XU Xiaoming, et al. Advances in molecular dynamics simulation of nano-manufacturing of monocrystalline materials [J]. Diamond & Abrasives Engineering,2018,38(5):78-86. doi: 10.13394/j.cnki.jgszz.2018.5.0015
    [9]
    LIU H T, ZHU X F, SUN Y Z, et al. Evolution of stacking fault tetrahedral and work hardening effect in copper single crystals [J]. Applied Surface Science,2017,422(15):413-419.
    [10]
    GUO Y B, LIANG Y C. Atomistic simulation of thermal effects and defect structures during nanomachining of copper [J]. Transactions of Nonferrous Metals Society of China,2012,22(11):2762-2770. doi: 10.1016/S1003-6326(11)61530-6
    [11]
    SHIMADA S, IKAWA N, TANAKA H, et al. Structure of micromachined surface simulated by molecular dynamics analysis [J]. CIRP Annals-Manufacturing Technology,1994,43(1):51-54. doi: 10.1016/S0007-8506(07)62162-3
    [12]
    TO S, LEE W B, CHAN C Y. Ultraprecision diamond turning of aluminium single crystals [J]. Journal of Materials Processing Technology,1997,63(1/2/3):157-162. doi: 10.1016/S0924-0136(96)02617-9
    [13]
    REN J, LIANG G X, MING L V. Effect of different crystal orientations on the surface integrity during nanogrinding of monocrystalline nickel [J]. Modelling and Simulation in Materials Science and Engineering,2019,27(7):103855.
    [14]
    SWOPE W C, ANDERSEN H C, BERENS P H, et al. A computer simulation method for the calculation of equilibrium constants for the formation of physical clusters of molecules: Application to small water clusters [J]. Journal of Chemical Physics,1982,76(1):637-649. doi: 10.1063/1.442716
    [15]
    DAW M S, BASKES M I. Semiempirical, quantum mechanical calculation of hydrogen embrittlement in metals [J]. Physical Review Letters,1983,50(17):1285-1288. doi: 10.1103/PhysRevLett.50.1285
    [16]
    DANDEKAR C R, SHIN Y C. Molecular dynamics based cohesive zone law for describing Al–SiC interface mechanics [J]. Composites Part A: Applied Science & Manufacturing,2011,42(4):355-363.
    [17]
    TERSOFF J. Modeling solid-state chemistry: Interatomic potentials for multicomponent systems [J]. Physical Review B,1989,39(8):5566-5568. doi: 10.1103/PhysRevB.39.5566
    [18]
    PLIMPTON S. Fast parallel algorithms for short-range molecular dynamics [J]. Journal of Computational Physics,1995,117(1):1-19. doi: 10.1006/jcph.1995.1039
    [19]
    STUKOWSKI A. Visualization and analysis of atomistic simulation data with ovito-the open visualization tool [J]. Modelling and Simulation in Materials Science and Engineering,2010,18(1):2154-2162.
    [20]
    FANG Q H, WANG Q, LI J, et al. Mechanisms of subsurface damage and material removal during high speed grinding processes in Ni/Cu multilayers using a molecular dynamics study [J]. RSC Advances,2017,7(67):42047-42055. doi: 10.1039/C7RA06975H
    [21]
    LI J, FANG Q H, LIU Y W, et al. Scratching of copper with rough surfaces conducted by diamond tip simulated using molecular dynamics [J]. The International Journal of Advanced Manufacturing Technology,2015,77(5/6/7/8):1057-1070. doi: 10.1007/s00170-014-6536-6
    [22]
    TONIETTO L, GONZAGA L, VERONEZ M R, et al. New method for evaluating surface roughness parameters acquired by laser scanning [J]. Scientific Reports,2019,9(1):15038. doi: 10.1038/s41598-019-51545-7
    [23]
    仇健, 巩亚东, 刘昌付, 等. 几种因素对快速点磨削表面粗糙度的影响 [J]. 金刚石与磨料磨具工程,2009,4:39-43. doi: 10.3969/j.issn.1006-852X.2009.04.008

    QIU Jian, GONG Yadong, LIU Changfu, et al. Effect of several factors on quick-point grinding surface roughness [J]. Diamond & Abrasives Engineering,2009,4:39-43. doi: 10.3969/j.issn.1006-852X.2009.04.008
    [24]
    LI Y, SHUAI M B, ZHANG J J, et al. Molecular dynamics investigation of residual stress and surface roughness of cerium under diamond cutting [J]. Micromachines,2018,9:386. doi: 10.3390/mi9080386
    [25]
    AL-AHMARI A, ASHFAQ M, ALFAIFY A, et al. Predicting surface quality of γ-TiAl produced by additive manufacturing process using response surface method [J]. Journal of Mechanical Science and Technology,2016,30(1):345-352. doi: 10.1007/s12206-015-1239-y
    [26]
    CAI M B, LI X P, RAHMAN M. Study of the mechanism of nanoscale ductile mode cutting of silicon using molecular dynamics simulation [J]. International Journal of Machine Tools & Manufacture,2007,47(1):75-80.
    [27]
    HOSSEINI S V, VAHDATI M. Modeling the effect of tool edge radius on contact zone in nanomachining [J]. Computational Materials Science,2012,65:29-36. doi: 10.1016/j.commatsci.2012.06.037
    [28]
    ZHU Z X, PENG B, FENG R C, et al. Molecular dynamics simulation of chip formation mechanism in single-crystal nickel nanomachining [J]. Science China Technological Sciences,2019,62(11):48-61.
    [29]
    王全龙. 晶体铜纳米切削加工亚表层晶体结构及缺陷演变机理研究 [D]. 哈尔滨: 哈尔滨工业大学, 2016.

    WANG Quanlong. Research on the evolution mechanism of subsurface defect and crystal structure of crystal copper in nanometric cutting process [D]. Harbin: Harbin Institute Technology, 2016.
    [30]
    冯瑞成, 乔海洋, 朱宗孝, 等. 单晶γ-TiAl合金纳米切削过程的分子动力学模拟 [J]. 稀有金属材料与工程,2019,48(5):1559-1566.

    FENG Ruicheng, QIAO Haiyang, ZHU Zongxiao, et al. Molecular dynamics simulations of single crystal γ-TiAl alloy in nanometric cutting process [J]. Rare Metal Materials and Engineering,2019,48(5):1559-1566.
    [31]
    REN J, HAO M R, LV M, et al. Molecular dynamics research on ultra-high-speed grinding mechanism of monocrystalline nickel [J]. Applied Surface Science,2018,455(15):629-634.
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(7)  / Tables(1)

    Article Metrics

    Article views (116) PDF downloads(11) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return