首页> 外国专利> HIGH-STRENGTH HOT DIP GALVANIZED STEEL PLATE HAVING EXCELLENT MOLDABILITY, WEAK MATERIAL ANISOTROPY AND ULTIMATE TENSILE STRENGTH OF 980 MPA OR MORE, HIGH-STRENGTH ALLOYED HOT DIP GALVANIZED STEEL PLATE AND MANUFACTURING METHOD THEREFOR

HIGH-STRENGTH HOT DIP GALVANIZED STEEL PLATE HAVING EXCELLENT MOLDABILITY, WEAK MATERIAL ANISOTROPY AND ULTIMATE TENSILE STRENGTH OF 980 MPA OR MORE, HIGH-STRENGTH ALLOYED HOT DIP GALVANIZED STEEL PLATE AND MANUFACTURING METHOD THEREFOR

机译：高强度热浸镀锌钢板具有出色的可模制性，弱的材料各向异性和最高980 MPA的拉伸强度，高强度合金热浸镀锌钢板及其制造方法

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摘要

[Abstract] Provided is a high-strength hot-dip galvanized steel sheet having small material anisotropy and excellent formability with an ultimate tensile strength of 980 MPa or more. The hot-dip galvanized steel sheet includes a hot-dip galvanized layer formed on a surface of a base steel plate. The base steel plate contains, by mass%, C: 0.1 to less than 0.40%, Si: 0.5 to 3.0%, Mn: 1.5 to 3.0%, O: limited to 0.006% or less, P: limited to 0.04% or less, S: limited to 0.01% or less, Al: limited to 2.0% or less, N: limited to 0.01% or less, and a balance including Fe and inevitable impurities. A microstructure of the base steel sheet contains ferrite of 40% or more, residual austenite of 8 to less than 60%, by volume fraction, and a balance being bainite or martensite. In a sheet thickness range of 5/8 to 3/8 from the surface of the base steel sheet, a pole density of specific crystal orientation is within a predetermined range. The hot-dip galvanized layer contains Fe: less than 7 mass% and a balance including Zn, Al, and inevitable impurities.

机译：[摘要]本发明提供一种材料各向异性小，成形性优异，极限抗拉强度为980MPa以上的高强度热浸镀锌钢板。热浸镀锌钢板包括形成在基础钢板的表面上的热浸镀锌层。以质量％计，基础钢板包含C：0.1至小于0.40％，Si：0.5至3.0％，Mn：1.5至3.0％，O：限制为0.006％以下，P：限制为0.04％以下。，S：限制为0.01％以下，Al：限制为2.0％以下，N：限制为0.01％以下，余量包括Fe和不可避免的杂质。基体钢板的显微组织按体积分数含有40％以上的铁素体，8〜60％以下的残留奥氏体，余量为贝氏体或马氏体。在距母材钢板的表面的板厚5/8〜3/8的范围内，特定晶体取向的极密度在规定范围内。热浸镀锌层包含小于7质量％的Fe和余量的Zn，Al和不可避免的杂质。

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公开/公告号PL2762588T3

专利类型
公开/公告日2020-10-19

原文格式PDF
申请/专利权人 NIPPON STEEL CORPORATION;
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申请/专利号PL20120836248T
发明设计人 AZUMA MASAFUMI;WAKABAYASHI CHISATO;NOZAKI TAKAYUKI;FUJITA NOBUHIRO;TAKAHASHI MANABU;
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申请日2012-09-28
分类号C21D8/02;B32B15/01;C21D9/46;C22C18;C22C18/04;C22C38;C22C38/02;C22C38/04;C22C38/06;C22C38/08;C22C38/12;C22C38/14;C22C38/16;C22C38/26;C22C38/28;C22C38/32;C22C38/34;C22C38/38;C23C2/06;C23C2/12;C23C2/28;
国家 PL
入库时间 2022-08-21 11:16:41

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