40Cr钢磨削淬火层组织及其形成机理
Microstructure and Formation Mechanism of Grind Hardened Layer in 40Cr Steel
摘 要
采用棕刚玉砂轮在MMD7125型精密平面磨床上对40Cr钢进行了磨削淬火试验,研究了淬硬层组织及形成机理.结果表明：采用适当的磨削参数可满足该钢所要求的淬火温度,进而获得适宜的淬硬层显微硬度和强化层深度;磨削淬火层由完全硬化区和过渡区组成;完全硬化区主要由细小针状马氏体组成,从表面到里层,组织形貌呈现“细→粗→细”的变化规律,其形成机理是热-力耦合作用影响磨削淬火过程中的奥氏体晶粒大小及其位错密度,并将直接影响转变后的马氏体组织形貌.
40Cr钢
显微组织
形成机理
grinding hardening
40Cr steel
microstructure
formation mechanism
Abstract
The grind-hardening of steel 40Cr had been carried out on a conventional surface grinder with alumina grinding wheel.The microstructure of hardened layer and formation mechanism were investigated.The microstructure of hardened layer consist of the completely hardened region and the transition region.The completely hardening region is composed of fine acicular martensites,residual austenites and a few dot-like carbonides.From surface to bottom in the hardened layer,the microstructure varies from fine to coarse and then backed to fine.The mechanism is that thermo-mechanical coupling affects austenite granularity during grinding hardening and thus directly affects the microstructure of martensites.
中图分类号 TG580.64 TG156.33
所属栏目
基金项目 江苏省泰州市科技发展计划基金资助项目(TG0609);江苏省自然科学基金资助项目(BK2005124)
收稿日期 2007/3/7
修改稿日期 2007/7/24
网络出版日期
作者单位点击查看
备注秦松祥(1955-),男,江苏泰州人,研究员级高级工程师.
引用该论文: QIN Song-xiang,XIAO Bing,LI Shu-sheng,SONG Zheng-he,SU Hong-hua,FEI Zhen-hua,GONG Huan. Microstructure and Formation Mechanism of Grind Hardened Layer in 40Cr Steel[J]. Materials for mechancial engineering, 2007, 31(12): 24～26
秦松祥,肖冰,李曙生,宋正和,苏宏华,费振华,龚欢. 40Cr钢磨削淬火层组织及其形成机理[J]. 机械工程材料, 2007, 31(12): 24～26
被引情况:
【1】王凌旭,蒋 欣,代发明,梁 宇, "220 kV断路器用弹簧异常开裂失效分析",机械工程材料 40, 104-107(2016)
【2】刘克铭,马壮,张连勇,刘波, "42CrMo钢磨削淬火强化层的显微组织和磨损性能",机械工程材料 36, 58-61(2012)
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】Brinksmeier E,Brockhoff T.Utilization of grinding heat as a new heat treatment process[J].Annals of the CIRP,1996(1):283-286.
【2】Brockhoff T.Grind-hardening:a comprehensive view[J].Annals of the CIRP,1999(1):255-260.
【3】Stohr R,Heinzel C.Grind-hardening with CBN[J].Abrasives magazine,2002(6):22-30.
【4】Zarudi I,Zhang L C.Mechanical property improvement of quenchable steel by grinding[J].Journal of Materials Science,2002,37(18):3935-3943.
【5】Zarudi I,Zhang L C.Modeling the structure changes in quenchable steel subjected to grinding[J].Journal of Materials Science,2002,37(20):4333-4341.
【6】Groseb J,Kocjancic B.钢的短时淬火的研究[C]//严茂芳,译.第三届国际材料热处理大会论文选集.北京:机械工业出版社,1983:64-69.
【7】李松瑞,周善初.金属热处理[M].长沙:中南大学出版社,2003.
【2】Brockhoff T.Grind-hardening:a comprehensive view[J].Annals of the CIRP,1999(1):255-260.
【3】Stohr R,Heinzel C.Grind-hardening with CBN[J].Abrasives magazine,2002(6):22-30.
【4】Zarudi I,Zhang L C.Mechanical property improvement of quenchable steel by grinding[J].Journal of Materials Science,2002,37(18):3935-3943.
【5】Zarudi I,Zhang L C.Modeling the structure changes in quenchable steel subjected to grinding[J].Journal of Materials Science,2002,37(20):4333-4341.
【6】Groseb J,Kocjancic B.钢的短时淬火的研究[C]//严茂芳,译.第三届国际材料热处理大会论文选集.北京:机械工业出版社,1983:64-69.
【7】李松瑞,周善初.金属热处理[M].长沙:中南大学出版社,2003.
相关信息
