卢金斌,彭竹琴,弓金霞,杨卫铁,隋磊

• 1:中原工学院材料与化工学院

摘要(Abstract)：

采用等离子弧对HT200铸铁进行了熔凝处理,利用光学显微镜、显微硬度仪对熔凝试样各区域进行测试分析,在综合考虑材料非线性、熔化潜热、热源模型对等离子弧熔凝温度场影响的基础上,采用ANSYS软件建立了HT200铸铁等离子弧熔凝连续移动三维瞬态温度场有限元模型。结果表明,熔凝层显微硬度达到750～850 HV 0.1,熔凝层组织为马氏体+渗碳体+残留奥氏体;模拟熔池最高温度达到2366℃,熔凝区模拟的形状及尺寸与实际基本吻合。

关键词(KeyWords)： 等离子弧熔凝;温度场;有限元分析;HT200铸铁

Abstract:

Keywords:

基金项目(Foundation): 河南省基础与前沿技术研究(072300440020)

作者(Author): 卢金斌,彭竹琴,弓金霞,杨卫铁,隋磊

DOI: 10.13289/j.issn.1009-6264.2010.07.009

参考文献(References)：

• [1]袁建军,谢艳春,崔洪芝,等.汽车发动机缸体灰铸铁等离子相变硬化组织及性能分析[J].热加工工艺,2007,36(10):15-16.YUAN Jian-jun,XIE Yan-chun,CUI Hong-zhi,et al.Analysis of structure and properties of plasma phase-change hardening for automobile enginebody[J].Metal Hotworking Technology,2007,36(10):15-16.
• [2]韩培德,武晓雷,程利华.激光熔凝处理对合金铸铁组织及性能的影响[J].太原理工大学学报,1999,30(4):423-425.HAN Pei-de,WU Xiao-lei,CHENG Li-hua.Investigation on laser melting treatment of alloying cast iron[J].Journal of Taiyuan University ofTechnology,1999,30(4):423-425.
• [3]刘振侠.激光熔凝和激光熔覆的数学模型及数值分析[D].西安:西北工业大学,2003.
• [4]王东生,田宗军,沈理达,等.TiAl合金表面激光重熔等离子喷涂MCrAlY涂层热力耦合有限元分析[J].应用激光,2008,28(2):92-97.WANG Dong-sheng,TIAN Zong-jun,SHEN Li-da,et al.Thermal-mechanical coupling finite element analysis of laser remelting MCrAlY coatingprepared by plasma spraying on TiAl alloy surface[J].Applied Laser,2008,28(2):92-97.
• [5]崔泽琴,王文先,梁军,等.微束等离子弧熔凝处理15CrMo钢的组织和性能[J].材料热处理学报,2007,28(5):124-127.CUI Ze-qin,WANG Wen-xian,LIANG Jun,et al.Microstructure and properties of 15CrMo steel treated by micro-beam plasma arc melting[J]Transactions of Materials and Heat Treatment,2007,28(5):124-127.
• [6]刘志东,陈勇,黄因慧,等.喷射电镀Ni镀层激光重熔温度场的数值模拟[J].中国机械工程,2007,18(23):2884-2886.LIU Zhi-dong,CHEN Yong,HUANG Yin-hui,et al.Numerical simulation of the temperature field on laser remelted Ni-coating oriented by jetelectroforming[J].China Mechanical Engineering,2007,18(23):2884-2886.
• [7]刘红斌,万大平,胡德金.脉冲激光表面熔凝熔池演变数值模拟[J].上海交通大学学报,2008,42(9):1438-1442.LIU Hong-bin,WAN Da-ping,HU De-jin.Melting and solidification simulation of pulse laser molten surface[J].Journal of Shanghai JiaotongUniversity,2008,42(9):1438-1442.
• [8]田宗军,王东生,黄因慧,等.45钢表面激光重熔温度场数值模拟[J].材料热处理学报,2008,29(6):173-178.TIAN Zong-jun,WANG Dong-sheng,HUANG Yin-hui,et al.Numerical simulation of temperature field of laser remelting on 45 steel[J].Transactions of Materials and Heat Treatment,2008,29(6):173-178.
• [9]张国智,胡仁喜,陈继刚,等.ANSYS 10.0热力学有限元分析实例指导教程[M].北京:机械工业出版社,2007:54-57.
• [10]郝石坚.现代铸铁学[M].北京:冶金工业出版社,2009.
• [11]郭广文,马惠霞,张健.铸铁的热物性测定及其与显微组织的关系[J].理化检验:物理分册,2005,41(1):13-16.GUO Guang-wen,MA Hui-xia,ZHANG Jian.The measurement of thermophysical properties of cast iron and the relationship to its microstructure[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2005,41(1):13-16.

文章评论(Comment)：