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HIGH-STRENGTH HOT-DIP GALVANIZED STEEL SHEET AND PROCESS FOR PRODUCING SAME

机译:高强度热浸镀锌钢板及其制备方法

摘要

A high-strength hot-dip galvanized steel sheet containing a main component, the steel sheet having at least 40 wt.% of ferrite as a main phase in terms of the volumetric ratio, and 8-60% inclusive of residual austenite, the remaining structure comprising one or more of bainite, martensite, or pearlite. Austenite particles within a range where the average residual stress (sigmaR) thereof satisfies the expression -400MPa<=sigmaR<=200MPa (formula (1)) are present in an amount of 50% or more in the hot-dip galvanized steel sheet. The surface of the steel sheet has a hot-dip galvanized layer containing less than 7 wt.% of Fe, the remainder comprising Zn, Al and inevitable impurities.
机译:一种高强度热浸镀锌钢板,含有主要成分,钢板具有至少40重量%的钢板,其作为体积比的主要相,和8-60%包括残留的奥氏体,其余包含一种或多种贝氏体,马氏体或珠光体的结构。奥氏体颗粒在其平均残余应力(Sigmar)满足表达式-400MPa <= Sigmar <= 200MPa(式(1))的范围内,其在热浸镀锌钢板中的50%以上存在。钢板的表面具有含有少于7重量%的热浸镀锌层。占Fe的%,其余部分包含Zn,Al和不可避免的杂质。

著录项

  • 公开/公告号EP2762579B2

    专利类型

  • 公开/公告日2021-03-03

    原文格式PDF

  • 申请/专利权人 NIPPON STEEL CORPORATION;

    申请/专利号EP20120834788

  • 申请日2012-09-28

  • 分类号C22C38;B21B3;C21D9/46;C22C18/04;C22C38/06;C22C38/58;C23C2/02;C23C2/06;C23C2/28;

  • 国家 EP

  • 入库时间 2022-08-24 17:29:18

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