低碳微合金化含硼冷镦钢的力学性能研究  

Study on mechanical properties of boron bearing low carbon micro-alloying cold heading steel

作　　者：周新龙 叶飞[1] 陈伟庆[1] 刘振清[2] 

机构地区：[1]北京科技大学冶金与生态工程学院．北京10083 [2]武汉钢铁(集团)公司研究院,湖北武汉430080

出　　处：《炼钢》2009年第4期61-64,共4页Steelmaking

摘　　要：实验室试制了低碳Nb、V微合金化含硼冷镦钢,并对试验钢的组织和性能进行了对比研究。结果表明:钢中添加适当的Nb、V细化了含硼钢的铁素体晶粒,显著提高了含硼钢的抗拉强度,其中,Nb、V复合微合金化含硼钢的效果最好,其次是含钒硼钢和含铌硼钢。分析表明,Nb、V复合微合金化在含硼钢中的主要作用在于细化晶粒和沉淀强化。The low carbon boron bearing Nb and V micro-alloyed cold heading steel has been trial-produced in laboratory. The microstructure and mechanical properties of the testing steels have also been studied contrastively. The results indicated that a proper amount of Nb,V in steel can refine the ferrite grain of the boron steel and enhance its tensile strength obviously, and the effect of boron bearing Nb and V composite micro-alloyed steel is the best and next best is the boron bearing V and Nb steel. Analysis shows that the main function of Nb and V micro-alloying is assumed to refine the grain and enhance deposition.

关 键 词：微合金化 含硼冷镦钢 力学性能 

分 类 号：TG142.13[一般工业技术—材料科学与工程]