汽车用钢的发展与低熵化先进高强钢设计  

Development History of Automobile Steels and Advanced High Strength Steels with Novel Low-entropy Design

作　　者：刘仁东 吴萌 胡智评 徐鑫 林春青 LIU Rendong;WU Meng;HU Zhiping;XU Xin;LIN Chunqing(State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,Liaoning,China;Ansteel Iron&Steel Research Institutes,Anshan 114009,Liaoning,China;Cold Rolled Strip Steel Mill of Angang Steel Co.,Ltd.,Anshan 114021,Liaoning,China)

机构地区：[1]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009 [2]鞍钢集团钢铁研究院,辽宁鞍山114009 [3]鞍钢股份有限公司冷轧厂,辽宁鞍山114021

出　　处：《鞍钢技术》2024年第3期1-8,共8页Angang Technology

摘　　要：介绍了汽车用钢的发展历史与推动汽车用钢发展的历史性事件,展望了未来汽车用钢在“双碳”背景下的发展方向。同时,介绍了汽车用先进高强钢的发展与分类,阐述汽车钢从软钢、低碳钢、高强钢到先进高强钢的发展过程,详细阐述第一代到第三代先进高强钢迭代升级过程中成本、合金、组态与性能等方面的设计思路。最后,提出创新性的低熵化设计理念,并介绍所设计的覆盖四类双相钢产品的低熵化产品,包含成分与工艺的设计思路。提出“组态异构”的低熵化设计,以用户切实的应用需求为导向,深入分析产品性能特征,结合钢铁材料的物理冶金机理与生产制造阶段装备及工艺特征,从设计端对产品进行减量化、单一化、归一化的梯度低熵化设计,实现产品低成本高性能生产制造思路。The development history of automobile steels and those historical events that promoted the development of automobile steels were introduced.And then the development direction of automobile steels in the future under the background of Double-carbon Policy was prospected.At the same time,the development and classification of advanced high strength steels for automobile-making were introduced,while the development history of automotive steels from mild steels,low carbon steels,high strength steels to advanced high strength steels was expounded.Particularly,the design ideas in terms of such factors as cost,alloy,configuration and properties of advanced high strength steels during upgrading by iteration from the first generation to the third generation were elaborated.Finally,the innovative design concept with novel low-entropy was proposed,and the design ideas in terms of these products with low-entropy covering four kinds of Dual Phase steel products,including ideas on their compositions and processes were introduced.Therefore,the Heterogeneous Configuration design with low-entropy was proposed,guided by the practical application requirements asked by users.On the other hand,the characteristics and properties of these products were deeply analyzed, combined with the physical metallurgy mechanism of steel materials and the equipment and process characteristics during manufacturing stage, and thus these products were reduced in weight, simplified and normalized in process with gradient low-entropy design from the very beginning of designing so that the idea of low-cost and high properties of the products in manufacturing was achieved.

关 键 词：汽车钢 先进高强钢 低熵化设计 成分归一化 跨强度级别 

分 类 号：TG142[一般工业技术—材料科学与工程]