汽车用轻质TWIP钢的组织演变  

Microstructure evolution of light quality TWIP steel used for automobile

作　　者：严玲[1] 刘仁东[1] 严平沅[1] 周敬[1] 王锐[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《金属热处理》2010年第4期1-4,共4页Heat Treatment of Metals

摘　　要：研究中碳-高Mn系TWIP钢在固溶处理后的组织和力学性能。用OM、XRD、TEM和EBSD分析形变前后的微观组织演变规律和高强塑性产生机制。结果表明,形变孪晶密度随着变形程度的增加而增大,形变孪晶的渐进产生、细化起到细晶强化和延缓断裂的作用,使TWIP钢具有优异的综合力学性能和成形性能。Microstructure and mechanical properties of medium carbon-high manganese TWIP steel after solution treatment were researched.Microstructure evolution and mechanism of high strength and plasticity of TWIP steel before and after deformation were analyzed by OM,XRD,TEM and EBSD.The results show that the deformation twins′ density increases with the deformation degree increasing,the gradually forming and fining of deformation twins lead to the actions of fine-grain strengthening and fracture retarded,and this makes TWIP steel possess good comprehensive mechanical properties and formability.

关 键 词：TWIP钢 固溶处理 微观组织 形变孪晶 

分 类 号：TG142.1[一般工业技术—材料科学与工程]