阅读说明：本技术 经冷轧和涂覆的钢板及其制造方法 (Cold rolled and coated steel sheet and method for manufacturing the same ) 是由 全现助 纳拉扬·波托雷 范东伟 陈翔(弗兰克) 奥列格·雅库鲍夫斯基 于 2020-05-12 设计创作，主要内容包括：一种经冷轧和涂覆的钢板,以重量百分比表示,其组成包含以下元素：0.140％≤碳≤0.2％、1.5％≤锰≤2.15％、0.5％≤硅≤0.8％、0.4％≤铝≤0.8％、0％≤磷≤0.09％、0％≤硫≤0.09％、0％≤氮≤0.09％、0.01％≤铌≤0.1％、0.01％≤钛≤0.1％,并且可以包含以下任选元素中的一者或更多者：0％≤铬≤0.1％、0％≤镍≤3％、0％≤钙≤0.005％、0％≤铜≤2％、0％≤钼≤0.5％、0％≤钒≤0.1％、0％≤硼≤0.003％、0％≤铈≤0.1％、0％≤镁≦0.010％、0％≤锆≦0.010％,剩余部分组成由铁和因加工产生的不可避免的杂质构成,所述钢板的显微组织以面积分数计包含：40％至60％临界区铁素体、25％至45％转变铁素体、8％至20％和5％至20％新鲜马氏体、0％至10％贝氏体,其中临界区铁素体和转变铁素体的累积量为75％至85％。(A cold rolled and coated steel sheet, the composition of which comprises, in weight percent: 0.140% to less than or equal to 0.2% carbon, 1.5% to less than or equal to 2.15% manganese, 0.5% to less than or equal to 0.8% silicon, 0.4% to less than or equal to 0.8% aluminum, 0% to less than or equal to 0.09% phosphorus, 0% to less than or equal to 0.09% sulfur, 0% to less than or equal to 0.09% nitrogen, 0.01% to less than or equal to 0.1% niobium, 0.01% to less than or equal to 0.1% titanium, and may include one or more of the following optional elements: chromium is more than or equal to 0 percent and less than or equal to 0.1 percent, nickel is more than or equal to 0 percent and less than or equal to 3 percent, calcium is more than or equal to 0 percent and less than or equal to 0.005 percent, copper is more than or equal to 0 percent and less than or equal to 2 percent, molybdenum is more than or equal to 0 percent and less than or equal to 0.5 percent, vanadium is more than or equal to 0 percent and less than or equal to 0.1 percent, boron is more than or equal to 0 percent and less than or equal to 0.003 percent, cerium is more than or equal to 0 percent and less than or equal to 0.1 percent, magnesium is more than or equal to 0 percent and less than or equal to 0.010 percent, zirconium is more than or equal to 0.010 percent and the rest part consists of iron and inevitable impurities generated by processing, and the microstructure of the steel plate comprises by area fraction: 40% to 60% intercritical ferrite, 25% to 45% transformed ferrite, 8% to 20% and 5% to 20% fresh martensite, 0% to 10% bainite, wherein the cumulative amount of intercritical ferrite and transformed ferrite is 75% to 85%.)