汽车轻量化用先进高强钢开发进展

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中图分类号： U465.1+1 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250246

Development ProgressofAdvancedHigh-Strength Steelsfor Automotive Lightweighting

Qiu Musheng 1，2 ，YangFeng²，Liu Huasai²，Han Yun²，TengHuaxiang²，Bai Zhenhua1.3 （1.NationalColdRolingStripEqupmentandProcessEngineeingTechnologyResearchCenter，YanshanUniversityQinuangdao 066004;2.ResearchIstituteofTechnologyhougang GroupCo.Ltd.BeijingOo43;3.ShenzhenResearchInstituteofYashan University， Shenzhen 518063）

Abstract：To enhance automotive lightweighting，a company has systematically developed aseries of advanced high-strengthsteels，including high-strengthDual-Phase（DP）steel，Complex-Phase（CP）steel，High-hole-Expansion （HE）steel，Dual-phasesteelwithHighformability（DH），andTransformation-inducedplasticityBainiticFerrite（BF） steel.These steels cover strength grades ranging from 78O MPa to1470 MPa and have achieved mass production.The company hassuccessfully developed dual-phase steel with a tensile strength of upto15Oo MPa，introduced highyield-ratio complex-phase stels such asHC660/780CPand HC900/1180CP，andlaunchedaseries of DHsteel products with multiple coating types，demonstrating significant advantages inthe integrated manufacturing of complex componentsand“all-in-one”parts.Additionally，HE steel with high hole expansionratioand excelentbending propertieshasbeendeveloped，alongwithTBFstelthatcombinesultra-highstrengthandsuperiorformability. Breakthroughshavealsobeen made inmitigating Liquid MetalEmbritlement （LME）during thespot weldingof TBF steel.

Key words：High-strengthual-phasesteel，DHsteel，BFstel，Highholeexpansionstel，orbiity

1前言

的抗碰撞性能以及相对较低的成本，被视为实现汽车车身轻量化与安全性能提升的关键材料之二[-3]。（剩余9722字）