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DUAL-PHASE HIGH-TENSILE COLD ROLLED STEEL SHEET EXCELLENT IN DEEP DRAWABILITY AND STRAIN AGE HARDENABILITY, GALVANNEALED STEEL SHEET, AND THEIR PRODUCTION METHODS
DUAL-PHASE HIGH-TENSILE COLD ROLLED STEEL SHEET EXCELLENT IN DEEP DRAWABILITY AND STRAIN AGE HARDENABILITY, GALVANNEALED STEEL SHEET, AND THEIR PRODUCTION METHODS
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机译：深可延展性和应变时效性优良的双相冷轧薄钢板，镀锌钢板及其生产方法
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摘要
PROBLEM TO BE SOLVED: To provide a dual-phase high-tensile cold rolled steel sheet excellent in deep drawability and strain age hardenability, a galvannealed steel sheet, and their production methods. ;SOLUTION: The raw material steel sheet for the dual-phase high-tensile cold rolled steel sheet and the galvannealed steel sheet comprises 0.01-0.05 mass% C, 1.0 mass% or less Si, 3.0 mass% or less Mn, 0.10 mass% or less P, 0.02 mass% or less S, 0.03 mass% or less Al, 0.005-0.03 mass% N, 0.01-0.5 mass% V, and the balance substantially being Fe and unavoidable impurities provided that V, C, and N satisfy the relation represented by 0.5×(C/12+N /14)≤V/51≤2×(C/12+N/14). The raw material steel sheet has a structure comprising a ferrite phase as the main phase and the second phase containing a martensite phase in an areal ratio, based on the total structure of 1% or higher.;COPYRIGHT: (C)2004,JPO
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机译：要解决的问题：提供一种在深冲性和应变时效性方面优异的双相高强度冷轧钢板，热镀锌钢板及其制造方法。 ;解决方案：用于双相高强度冷轧钢板和热镀锌钢板的原材料钢板包含0.01-0.05质量％的C，1.0质量％以下的Si，3.0质量％以下的Mn，0.10质量％ P，0.02质量％以下，S，0.03质量％以下的Al，0.005〜0.03质量％的N，0.01〜0.5质量％的V，其余的只要Fe，C，N满足，则基本为Fe和不可避免的杂质。该关系以0.5×（C / 12 + N / 14）×V / 51×2×（C / 12 + N / 14）表示。原料钢板具有以铁素体相为主成分，且第二相含有马氏体相的面积比为1％以上的组织，该组织为1％以上。版权所有（C）2004，日本特许厅
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