摘要
为满足汽车轻量化、节能减排和抗冲撞安全对高强塑性车身结构材料的需求,各国钢铁业与汽车业合作开发应用第3代先进高强度钢AHSS汽车板取得重要进展。由于金属晶体结构的本质特征,任何提高强度的方法均会导致其塑性的降低,因此第3代AHSS钢超高强度汽车板的开发,面临着金属晶体材料强塑化机理的难题:在大幅度提高汽车板强度的同时如何获得必要的塑性延伸能力及其相应的显微组织?以抗拉强度TS 1 000~1 500 MPa级超高强度汽车板在强塑化机理研究方面取得的两次突破性进展为线索,讨论了第3代AHSS汽车板在淬火-碳分配(Quenching-Partitioning)QP处理钢、非均质性纳米组织钢(Heterogeneous Nanostructure Steel)和高强塑性热成形钢(Ductile Press-Hardened Steel)在研究开发与生产应用方面的国际前沿进展。
To meet the requirement of automotive on weight-lightening,energy-saving,emission-control and crashworthiness,the high-strength-ductility materials for auto-body structure are needed,and the 3rd generation of advanced high strength steel(AHSS) have been developed by auto-makers and steel industry in closed cooperation.Due to the native characteristics of metallic material in crystallographic structure,any method to increase its strength will inevitably lead to the decrease of ductility.Therefore the development of 3rd generation AHSS with ultra-high-strength-ductility is facing the puzzle in the mechanism of synchronous strengthening-plasticizing in the steel.In the present paper,the important progresses in TS≥1 000-1 500 MPa grade ultra-high-strength-steel of 3rd generation AHSS were introduced and discussed,including quenching-partitioning steel,heterogeneous nanostructured steel and ductile press-hardened steel.
作者
李光瀛
王利
马鸣图
张建
张宜生
罗荣
LI Guang-ying;WANG Li;MA Ming-tu;ZHANG Jian;ZHANG Yi-sheng;LUO Rong(Central Iron and Steel Research Institute,China Iron and Steel Research Institute Group,Beijing 100081,China;Central Research Institute,Baoshan Iron and Steel Group,Shanghai 200941,China;China Automotive Engineering Research Institute,Chongqing 401122,China;Science&Technology Dept.,Masteel Group,Maanshan 243003,China;Materials Science and Engineering School,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《轧钢》
2019年第5期1-13,共13页
Steel Rolling
