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发明公开
CN102844454A 加工性优异的高屈服比高强度的熔融镀锌钢板和合金化熔融镀锌钢板 失效 - 权利终止

加工性优异的高屈服比高强度的熔融镀锌钢板和合金化熔融镀锌钢板
摘要：
一种拉伸强度为980MPa以上的加工性优异的高屈服比高强度镀锌钢板或者合金化熔融镀锌钢板，其特征在于，C：0.12～0.3％，％表示质量％的含义、Si：0.1％以下(不含0％)、Mn：2.0～3.5％、P：0.05％以下(不含0％)、S：0.05％以下(不含0％)、Al：0.005～0.1％、和N：0.015％以下(不含0％)，余量为铁和不可避免的杂质，金属组织以贝氏体为母相组织，以相对于全部组织的比例计，满足铁素体的面积率：3～20％、和马氏体的面积率：10～35％。
摘要（英）：

Disclosed is a hot dipped galvanized steel sheet or an alloyed hot-dip galvanized steel sheet, which has a tensile strength of 980 MPa or more, excellent processability, high yield ratio and high strength. The hot dipped galvanized steel sheet or the alloyed hot-dip galvanized steel sheet is characterized by containing 0.12-0.3% by mass of C, 0.1% by mass or less (excluding 0% by mass) of Si, 2.0-3.5% by mass of Mn, 0.05% by mass or less (excluding 0% by mass) of P, 0.05% by mass or less (excluding 0% by mass) of S, 0.005-0.1% by mass of Al and 0.015% by mass or less (excluding 0% by mass) of N, with the balance made up of ion and unavoidable impurities. The hot dipped galvanized steel sheet or the alloyed hot-dip galvanized steel sheet is also characterized in that the metallic structure thereof contains bainite as a matrix structure, and the area ratio of ferrite is 3-20% and the area ratio of martensite is 10-35% relative to the entire structure.

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