摘要
通过添加钼和改变氮含量,在实验室条件下熔炼浇注钢锭,采用控轧控冷技术(TMCP)轧制钢板,研究了Mo、N元素对含钛马氏体钢力学性能的影响。结果表明:钼添加到钛微合金马氏体钢中,经回火+淬火处理后,纳米级TiC析出相增多,原奥氏体晶粒由8μm细化到5μm,屈服强度和韧性值增加;钛钼钢中氮含量增加,微米级TiN增多,对钢的屈服强度影响很小,但低温(-40℃)冲击韧性显著降低。
The influence of Mo addition and N content on mechanical properties of martensitic steel through Ti addition was investigated,using Thermo Mechanical Control Process technology（TMCP） to produce plate in experimental condition.When Mo add to Ti microlloyed steel,the size of TiC precipitates are refined,which results in an austenite grain size refinement from 8 to 5 μm with yield strength and impact toughness increasing.As the amount of N increasing in the Ti/Mo microalloyed steel,the micron scale TiN precipitations are increased,so as to the martensitic steel have seriously bad impact toughness at-40 ℃ while small influence on yield strength.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2013年第8期32-36,共5页
Journal of Iron and Steel Research
基金
国家973计划资助项目(2010CB630803)
国家863计划资助项目(2009AA033401)
