高速钢激光重熔后的组织与性能  

Structure and Properties of High-Speed Steel Remelted by Laser

作　　者：陈传忠[1] 于慧君[2] 周香林[1] 孔翠荣[1] 朱瑞富[1] 王世清[1] 

机构地区：[1]山东工业大学材料学与工程学院,济南250061 [2]山东工业大学机械工程学院,济南250061

出　　处：《应用激光》1997年第4期149-152,共4页Applied Laser

基　　金：山东省科委资助

摘　　要：研究了W18Cr4V高速钢激光重熔后的组织与性能。结果表明，常规淬回火组织经激光重熔后其硬度、韧性都有提高，熔化层的残余应力为技应力；经640℃回火后；由于残余应力的消除及重熔组织中马氏体的二次硬化和残余奥氏体的二次淬火效应其耐磨性能有了进一步地提高。This paper deals with the structure and properties of W18Cr4V high -speed steel.The results show that hardness,toughness and wear resistance of W18Cr4V steel after remelted by laser have been enhanced,the residual stresses of remelted layer is of tensile stress state. After ternpered at 640℃ the wear resistance of remelted layer increases further because of the elirninating of residual stresses and the effects of the secondary hardening.

关 键 词：高速钢 激光重熔 残余应力 韧性 耐磨性 

分 类 号：TG142.45[一般工业技术—材料科学与工程] TG156.99[金属学及工艺—金属材料]