钛对含硼热冲压成形用钢组织和性能的影响  

Effect of Titanum on Microstructure and Properties of Hot Stamp-Formed Steels Containing Boron

作　　者：靳海亮[1] 赵爱民[1] 陈银莉[1] 程俊业[1] 

机构地区：[1]北京科技大学冶金工程研究院,北京100083

出　　处：《机械工程材料》2012年第8期6-9,33,共5页Materials For Mechanical Engineering

基　　金："十一五"国家科技支撑计划项目(2006BAE03A06)

摘　　要：主要通过绘制CCT曲线、热轧试验以及直接淬火试验,研究了加入钛元素对含硼热冲压成形用钢组织和性能的影响。结果表明:加入质量分数为0.015%的钛,可以提高试验钢的淬透性,在10℃.s-1的冷速下即能得到完全马氏体组织,而且可以提高热轧板淬火后的强度和硬度,并可使马氏体板条间距从0.35～0.54μm细化到0.12～0.25μm。Effects of titanium on the microstructure and properties of hot stamp-formed steels containing boron were studied by drawing CCT curves, hot rolling test and direct quenching test. The results show that adding 0. 015wt% titanium could increase the hardenability of the tested steels, and thus got full martensitic microstrueture at a lower cooling rate of 10 ℃·S^-1. The strength and hardness of the hot rolled sheets after quenching could he increased after adding 0. 015wt% titanium, and the distance of martensite lath could be decreased from 0. 35-0. 54 μm toO. 12-0. 25μrn.

关 键 词：热冲压成形用钢 钛 硼 淬透性 CCT曲线 硬度 

分 类 号：TG113[金属学及工艺—物理冶金]