介绍了第3代汽车钢的基础研究与工业试制工作.对国内外高性能汽车钢进行了回顾总结,在以"多相(Multi-phase)、亚稳(Meta-stable)、多尺度(Multi-scale)"(简称M3)为特征的组织调控理论的指导下,提出了高强塑积第3代汽车钢的超细晶基体与亚稳相的组织调控思路,采用了新型中锰合金化和逆转变奥氏体(Austenite Reverted Transformation,ART)退火的技术思路.详细介绍了第3代汽车钢的基础研究进展及工业试制结果,内容包括奥氏体逆转变退火机制,超细铁素体与亚稳奥氏体的双相形成规律,高强塑积汽车钢的力学行为及其强塑化机制,第3代汽车钢的工业试制流程及其服役性能和在汽车上应用技术与前景.本研究结果形成了以高强度和高塑性为特征的高塑积第3代汽车钢的原型钢技术,为汽车轻量化与碰撞安全性能的提高奠定了材料技术基础.
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