王宏宇,吴志奎,袁晓明,赵玉凤,程满

• 1:江苏大学机械工程学院

摘要(Abstract)：

采用激光辐照对渗硼后65Mn钢进行了表面改性,研究了激光重熔和激光淬火两种典型辐照处理后的微观组织、表层脆性和耐磨性。结果表明:65Mn钢渗硼试样,经激光重熔后其表层组织为夹杂着共晶硼化物的亚共晶组织(硬度约为880 HV),而经激光淬火后其表层组织是以Fe2B相为主的硼化物(硬度约为1100 HV),两种辐照处理后在次表层均形成了具有良好支撑作用的针状马氏体区;同时,两种激光辐照处理对表层脆性均有着较好的改善作用,脆性等级由原渗硼层的4级降低至1~2级;此外,经激光淬火后65Mn钢渗硼试样的耐磨性,不仅远好于激光重熔处理后的试样,而且也好于激光辐照处理前的渗硼试样。

关键词(KeyWords)： 激光辐照;渗硼层;65Mn钢;激光重熔;激光淬火

Abstract:

Keywords:

基金项目(Foundation): 国家科技支撑计划资助项目(2011BAD20B08);; 江苏大学高级专业人才科研启动基金资助项目(11JDG126)

作者(Author): 王宏宇,吴志奎,袁晓明,赵玉凤,程满

DOI: 10.13289/j.issn.1009-6264.2014.05.033

参考文献(References)：

• [1]孟海波,韩鲁佳,刘向阳,等.秸秆揉切机用刀片断裂失效分析[J].农业机械学报,2004,35(4):51-54.MENG Hai-bo,HAN Lu-jia,LIU Xiang-yang,et al.Study on fracture failure of cutters used in a 9RZ-60 model rubbing and cutting machine[J].Transactions of the Chinese Society for Agricultural Machinery,2004,35(4):51-54.
• [2]郑泽花,张立文,朱大喜,等.常用钢淬火表面换热系数耦合相变的反传热分析[J].材料热处理学报,2010,31(5):143-146.ZHENG Ze-hua,ZHANG Li-wen,ZHU Da-xi,et al.Inverse heat conduction analysis of surface heat transfer coefficients for typical steels during quenching with phase transformation[J].Transactions of Materials and Heat Treatment,2010,31(5):143-146.
• [3]王宏宇,赵玉凤,许晓静,等.热处理对65Mn钢表面渗硼层组织和性能的影响[J].材料热处理学报,2012,33(12):142-146.WANG Hong-yu,ZHAO Yu-feng,XU Xiao-jing,et al.Effects of heat treatment on microstructure and properties of boriding layer on 65Mn steel[J].Transactions of Materials and Heat Treatment,2012,33(12):142-146.
• [4]衣晓红,樊占国,张景垒,等.Ti-6Al-4V钛合金固体渗硼法表面改性[J].材料热处理学报,2010,31(9):119-123.YI Xiao-hong,FAN Zhan-guo,ZHANG Jing-lei,et al.Surface modification of Ti-6Al-4V alloy by pack boronizing[J].Transactions of Materials and Heat Treatment,2010,31(9):119-123.
• [5]Ozdemir O,Omar M A,Usta M,et al.An investigation on boriding kinetics of AISI 316 stainless steel[J].Vacuum,2008,83(1):175-179.
• [6]Kayali Y,YalinY.The effects of boro-tempering heat treatment on microstructural properties of ductile iron[J].Materials&Design,2011,32:1414-1419.
• [7]宣建功,贾笑天,吴宝善,等.激光处理后的渗硼层组织[J].兰州大学学报,1983,19(4):46-61.XU Jian-gong,JIA Xiao-tian,WU Bao-shan,et al.The structure of boronising layer after laser treatment[J].Journal of Lanzhou University,1983,19(4):46-61.
• [8]何孝渝,虞润林,王玲,等.激光处理对渗硼层脆性的影响[J].兰州大学学报,1984,20(2):22-38.HE Xiao-yu,YU Run-lin,WANG Ling,et al.Influence laser treatment brittleness of boronising layer[J].Journal of Lanzhou University,1984,20(2):22-38.
• [9]林成富,牟克,王涛.45钢渗硼层的激光熔凝处理[J].佳木斯大学学报:自然科学版,1999,17(2):136-138.LIN Cheng-fu,MO Ke,WANG Tao.Melting-solidification treatment with laser on the borided layer of 45 steel[J].Journal of Jiamusi University:Natural Science Edition,1999,17(2):136-138.
• [10]胡金锁,郝敬敏,万华,等.激光处理共晶型硼化物显微组织与相变过程分析[J].应用激光,2002,22(5):461-464.HU Jin-suo,HAO Jing-min,WAN Hua,et al.Analysis of transformation course on mechanism of boronized layer being eutecticumed with laser as well as observations on its microstructure[J].Applied Laser,2002,22(5):461-464.
• [11]刘永炘.硼化物层脆性的分析与控制[J].机械工程学报,1996,32(1):50-55.LIU Yong-xin.Analysis and control of brittleness of the boride layer[J].Chinese Journal of Mechanical Engineering,1996,32(1):50-55.
• [12]宋月鹏,柳洪洁,刘胜新,等.循环淬火渗硼锤片表层硼化物层的脆性研究[J].农业机械学报,2003,34(3):148-149,108.SONG Yue-peng,LIU Hong-jie,LIU Sheng-xin,et al.Research on brittleness of boride layer on hammer using circle quenching[J].Transactions of the Chinese Society for Agricultural Machinery,2003,34(3):148-149,108.

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