Cr12钢激光相变硬化机理  

THE MECHANISM OF LASER TRANSFORMATION HARDENING ON Cr12 STEEL

作　　者：朱捷[1] 刘家浚[1] 陈南平[1] 

机构地区：[1]清华大学

出　　处：《金属热处理学报》1990年第4期67-74,共8页

摘　　要：Cr12钢最佳激光相变硬化处理效果主要由下列因素造成:(1)马氏体含量大大增加(而残余奥氏体大大减少),(2)马氏体明显细化,(3)马氏体本身硬度摘高,(4)碳化物的弥散分布及(5)马氏体中极高的位错密度。TEM 观察证实马氏体与残余奥氏体之间符合K-S 关系。This paper deals with that the optimum effect of the laser transfor-mation hardening of steel Cr12 is due to the following factors:(a)great increase in the amount of martensite,(b)martensite being greatly refined,(c)martensite hardness being increased,(d)dispersive distri-button of fine M_3C particals and(e)very high density of dislocations in martensite.Additionally,K S orientation relationship between marte-nsite and retained austenite is observed.

关 键 词：CR12钢 相变 硬化 激光处理 

分 类 号：TG161.99[金属学及工艺—热处理]