封源,黎军顽,谢尘,闵娜,吴晓春

• 1:上海大学材料科学与工程学院

摘要(Abstract)：

基于金属-热-力耦合理论框架,利用DEFORM有限元分析软件建立了SDC99铣刀深冷处理多物理场耦合数值分析模型,探讨了深冷处理过程中铣刀内残留奥氏体的演变及分布规律,并借助X-ray衍射仪验证模拟结果。研究表明:淬火初始,铣刀中奥氏体的体积分数急剧下降,随着淬火时间的增加,奥氏体向马氏体的转变趋于平缓。淬火后,铣刀中残留奥氏体主要分布于刀刃根部附近和铣刀中空内圆柱面上,尤其是刀刃根部其残留奥氏体含量高达20%。进入深冷处理后,铣刀中的残留奥氏体继续向马氏体转变,与淬火初始相比,其奥氏体转变速率要小得多。深冷处理后,铣刀中残留奥氏体含量明显降低,其含量在3%以下,但仍主要聚集在刀刃根部。模拟结果与XRD定量分析结果比较吻合,验证了数值模拟的准确性和可靠性。

关键词(KeyWords)： 铣刀;深冷处理;残留奥氏体;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171104);; 上海大学创新基金

作者(Author): 封源,黎军顽,谢尘,闵娜,吴晓春

DOI: 10.13289/j.issn.1009-6264.2014.s2.049

参考文献(References)：

• [1]Collins D N.Deep cryogenic treatment of tool steels:a review[J].Heat Treatment of Metals,1995,23(2):40-42.
• [2]Kalsia N S,Sehgalb R,Sharma V S.Cryogenic treatment of tool materials:a review[J].Mater Manuf Proc,2010,25(10):1077-1100.
• [3]贺连芳,李辉平,赵国群.淬火过程中温度、组织及应力/应变的有限元模拟[J].材料热处理学报,2011,32(1):128-133.HE Lian-fang,LI Hui-ping,ZHAO Guo-qun.FEM simulation of temperature,phase-transformation and stress/strain in quenching process[J].Transactions of Materials and Heat Treatment,2011,32(1):128-133.
• [4]Pan J S,Li Y J,Gu J F,et al.Research and application prospect of computer simulation on heat treatment process[J].Journal of Shanghai Jiaotong University,2000,E-5(1):1-13.
• [5]Ferguson B L,Li Z,Freborg A M.Modeling heat treatment of steel parts[J].Computational Materials Science,2005,34(3):274-281.
• [6]赵祖德,王秋成,谢伟东,等.7A04铝合金构件深冷处理过程瞬态温度场的数值模拟[J].低温工程,2007,156(2):21-23.ZHAO Zu-De,WANG Qiu-cheng,XIE Wei-dong,et al.Numerical simulation of transient temperature field of 7A04 aluminum component during cryogenic treatment[J].Cryogenics,2007,156(2):21-23.
• [7]李强.齿轮滚刀的深冷处理的计算机模拟[D].太原:太原科技大学,2009.
• [8]兰国生,闫献国,李淑娟.深冷处理刀具温度场的计算机模拟[J].机械工程与自动化,2005(6):50-52.LAN Guo-sheng,YAN Xian-guo,LI Shu-juan.Computer simulation of deep cryogenic treatment tools temperature field[J].Mechanical Engineering&Automation,2005(6):50-52.
• [9]Jin T,Hong J P,Zheng H,et al.Measurement of boiling heat transfer coefficient in liquid nitrogen bath by inverse heat conduction method[J].Journal of Zhejiang University Science A,2009,10(5):691-696.
• [10]夏雨亮.低温阀门冷态试验过程传热模拟及深冷处理设备研制[D].杭州:浙江大学,2007.
• [11]翁中杰.传热学[M].上海:上海交通大学出版社,1987.
• [12]苏兴武,顾敏.淬火冷却过程数值模拟的研究现状及展望[J].金属热处理,2008,33(6):1-7.SU Xing-wu,GU Min.Research status and prospects of the numerical simulation of quenching process[J].Heat Treatment of Metals,2008,33(6):1-7.
• [13]Johnson A W,Mehl R F.Reactions of kinetics in processes of nucleation and growth[J].Trans AIME,1939,135:416-458.
• [14]Inoue T,Funatani K,Totten G E.Process modeling for heat treatment:current status and future development[J].Journal of Shanghai Jiaotong University,2000,E-5(1):14-25.
• [15]Inoue T,Yamaguchi T,Wang Z G.Stresses and phase transformations occurring in quenching of carburized steel gear wheel[J].Material Science and Technology,1984,1(10):872-876.
• [16]Li H P,Zhao G Q,He L F.Finite element method based simulation of stress-strain field in the quenching process[J].Materials Science and Engineering A,2008,478:276-290.
• [17]Jung M,Kang M,Lee Y K.Finite-element simulation of quenching incorporating improved transformation kinetics in a plain medium-carbon steel[J].Acta Materialia,2012,60:525-536.
• [18]Li J W,Tang L L,Li S H,et al.FEM simulation and experimental verification of temperature field and phase transformation in deep cryogenic treatment[J].Transactions of Nonferrous Metals Society of China,2012,22(6):2421-2430.
• [19]黎军顽,封源,吴晓春.冷作模具钢C型环试样深冷处理的数值模拟[J].机械工程材料,2013,37(2):90-94.LI Jun-wan,FENG Yuan,WU Xiao-chun.Numerical simulation of deep cryogenic treatment for cold work die steel C-ring specimen[J].Materials for Mechanical Engineering,2013,37(2):90-94.

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