首页> 外国专利> High-strength steel sheet material, hot-rolled steel sheet for high-strength steel sheet, hot-rolled annealed material for high-strength steel sheet, high-strength steel sheet, high-strength hot-dip galvanized steel sheet, and high-strength electroplated steel sheet, and production methods thereof

High-strength steel sheet material, hot-rolled steel sheet for high-strength steel sheet, hot-rolled annealed material for high-strength steel sheet, high-strength steel sheet, high-strength hot-dip galvanized steel sheet, and high-strength electroplated steel sheet, and production methods thereof

机译：高强度钢板材料，用于高强度钢板的热轧钢板，用于高强度钢板的热轧退火材料，高强度钢板，高强度热浸镀锌钢板和高强度钢板强度电镀钢板及其生产方法

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摘要

A high strength steel sheet having excellent surface quality and formability with a tensile strength of 980 MPa or more and a TS-El balance of 30000 MPa% or more is provided. A high strength steel sheet comprises: a chemical composition containing C: 0.08 % to 0.30 %, Si: 2.0 % or less, Mn: more than 3.0 % and 10.0 % or less, P: 0.05 % or less, S: 0.01 % or less, Al: 1.5 % or less, Ti: 0.010 % to 0.300 %, and N: 0.0020 % to 0.0100 % in a range satisfying 1.1 ‰¤ (Ti + Mn 1/2 /400)/(0.01 + 5N) ‰¤ 6.0; and a microstructure including a retained austenite phase and a ferrite phase, wherein a ratio ³Mn/±Mn of an average Mn concentration (³Mn) of the retained austenite phase to an average Mn concentration (±Mn) of the ferrite phase is 1.5 or more.

机译：本发明提供一种表面强度和成形性优异，拉伸强度为980MPa以上，TS-El平衡为30000MPa％以上的高强度钢板。一种高强度钢板，其特征在于，含有以下组成：C：0.08〜0.30％; Si：2.0％以下; Mn：3.0％以上且10.0％以下; P：0.05％以下; S：0.01％以上在满足1.1‰（Ti + Mn 1/2 /400)/(0.01 + 5N）‰¤的范围内，Al：1.5％以下，Ti：0.010％至0.300％，N：0.0020％至0.0100％ 6.0;包括残留奥氏体相和铁素体相的微结构，其中，残留奥氏体相的平均Mn浓度（³Mn）与铁素体相的平均Mn浓度（±Mn）的比Mn /±Mn为1.5以上。

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公开/公告号JP6245386B2

专利类型
公开/公告日2017-12-13

原文格式PDF
申请/专利权人ＪＦＥスチール株式会社;
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申请/专利号JP20160571439
发明设计人鼓健二;川崎由康;三木祐司;
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申请日2016-08-10
分类号C22C38;C22C38/14;C22C38/60;C21D9/46;B22D11/124;C23C2/06;C23C2/12;C23C2/28;C23C2/40;C23C28/02;
国家 JP
入库时间 2022-08-21 13:08:29

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