摘要
本文研究了不同钛含量对钒、钛微合金化汽车大梁用钢力学性能的影响。结果表明，０．０２％～０．１５％Ｔｉ对强度的影响分三个阶段：①＜０．０４％Ｔｉ，强度变化较小；②０．０４％～０．０８％Ｔｉ，强度随钛含量增加而显著升高；③０，０８％～０．１５％Ｔｉ，强度增加趋于平缓。其强度变化主要是细小弥散分布的ＴｉＣ强化所致。根据试验结果，开发了一种性能稳定的汽车大梁用钢新产品。
The effects of Ti content in the range of 0.02 to 0.15 percent on mechanical properties of V and Ti microalloyed steels are studied.The variations in strength with Ti content are divided into three phases.In the first phase(<0.04%Ti ),variation in Ti content has no marked effect on strength.Strength raises remarkably with increase of Ti content in the range of 0.04%～0.08%Ti. For more amounts of Ti (0.08%～0.15%),increase of strength tends to slow down with increasing Ti content.The main mechanism strengthened by Ti is different in each phase. A little Ti plays the main role in refining grain. For higher Ti content, strong precipitation strengthening provided by the fine dispersion of TiC and Ti (C、N)is the primary strengthening mechanism.
出处
《钢铁》
CAS
CSCD
北大核心
1995年第8期48-51,共4页
Iron and Steel
关键词
带钢
热轧带钢
钛
力学性能
汽车
大梁
V、Ti microalloying,Ti-bearing steel, mechanical properties, automobile frame
