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一、前言双相钢是由80～90％多边形铁素体和10～20％马氏体组成的混合组织。目前工业上应用的双相钢有高成型性的低合金高强度双相钢(20％马氏体,80％铁素体)和高强度高韧性结构钢(由板条状马氏体和5％以下的残留奥氏体所构成)。
I. Introduction Dual phase steel is a mixed structure composed of 80-90% polygonal ferrite and 10-20% martensite. Currently used in industrial duplex steel with high formability of low-alloy high-strength dual-phase steel (20% martensite, 80% ferrite) and high strength and toughness of structural steel (lath martensite and 5 % Or less of retained austenite).