3Cr-3Mo与H10MOD钢回火稳定性  

Tempering resistance of 3Cr-3Mo and H10MOD steels

作　　者：胡春东[1] 孟利[1] 陆恒昌[1] 董瀚[1] 

机构地区：[1]钢铁研究总院,北京100081

出　　处：《材料热处理学报》2016年第12期114-120,共7页Transactions of Materials and Heat Treatment

摘　　要：测量了两种Cr-Mo系钢的退火态、淬火态和回火态硬度,并运用Hollomon-Jaffe和转变速率关系式分别计算了两种钢的回火激活能。结果表明,在600~700℃之间回火时,含有较多C和碳化物形成元素Cr和V的H10MOD钢激活能高于3Cr-3Mo钢,说明H10MOD钢的回火稳定性高于3Cr-3Mo钢。Hollomon-Jaffe和转变速率关系式均可在一定的温度范围适用,然而转变速率关系式计算得到的激活能数值低于Hollomon-Jaffe关系式计算所得激活能。Tempering activation energies of two different Cr-Mo steels were estimated by the Hollomon-Jaffe equation and transformation rate expression with the measurement of hardness under annealing,quenching and tempering conditions. The results show that in the range of the tempering temperature of 600-675 ℃,the tempering activation energy of H10 MOD steel is higher than that of 3Cro-3Mo steel because the H10 MOD steel contains more C and carbide forming elements of Cr and V,hence the tempering stability of H10 MOD steel is higher than that of 3Cro-3Mo steel. The Hollomon-Jaffe equation and transformation rate expression are well applied in a specific temperature range. The activation energy calculated by Hollomon-Jaffe equation is higher than that by transformation rate expression.

关 键 词：热作模具钢 Hollomon-Jaffe关系式 转变速率关系式 激活能 

分 类 号：TG142.33[一般工业技术—材料科学与工程]