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.
出处
《机械工程材料》
CAS
CSCD
北大核心
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)
关键词
热冲压成形用钢
钛
硼
淬透性
CCT曲线
硬度
hot stamp-formed steel
titanium
borom hardenabiiity
continuous cooling transformation （CCT）curve
hardness
