铬─钼─钒系热模具钢中加镍量的探讨  

DISCUSSION ON AMOUNT OF Ni ADDITION TO HOT WORK DIE STEEL OF Cr─Mo─V SY5TEM

作　　者：罗学心[1] 何向山[1] 陈磊[1] 崔昆[1] 

机构地区：[1]华中理工大学

出　　处：《钢铁研究》1994年第6期32-35,48,共5页Research on Iron and Steel

摘　　要：研究了镍对热作模具钢４Ｃｒ３Ｍｏ２ＮｉＶＮｂＢ力学性能的影响，结果表明在这种钢中加入少于１．０％的镍，能增强二次硬化效应，提高韧性，改善热疲劳抗力。当加镍量达到２．０％时，镍的强韧化作用将被削弱。对产生这种作用的原因进行了讨论，并确定了４Ｃｒ３Ｍｏ２ＮｉＶＮｂＢ钢中镍的适宜加入量为１．０％。The influence of Ni on the mechanical properties of hot work die steel4Cr3Mo2NiVNbB has been investigated.It is shown that the secondary hardening effect,toughness of the steel and the thermal fatigue resistance get improved by adding less than 1.0%Ni, and thebeneficial effects of Ni die down as the amount of addition goes up to 2.0%, The casue of effect of Niis discussedand the appropriate amount of addition determined as 1.0% according to the test results.

关 键 词：加镍量 力学性能 模具钢 热作模具钢 铬钼钒钢 

分 类 号：TG142.45[一般工业技术—材料科学与工程]