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发明公开
CN109881104A 一种580MPa级热轧酸洗双相钢及其制备方法 有权

一种580MPa级热轧酸洗双相钢及其制备方法
摘要：
本发明涉及一种580MPa级热轧酸洗双相钢及其制备方法,属于冶金技术领域；本发明提供的热轧酸洗双相钢的化学成分包括：C：0.05-0.1％，Si≤0.1％，Mn：0.6-1.0％，P：0.02-0.04％，S≤0.006％，Cr：0.1-0.3％，Ti：0.015-0.03％，其余为Fe及不可避免的杂质，所述热轧酸洗双相钢的金相组织为铁素体+马氏体；本发明提供的热轧酸洗双相钢的抗拉强度≥580MPa，屈服强度为330-390MPa，延伸率A80≥22％。
摘要（英）：

The invention relates to 580-MPa-level hot-rolled acid pickling dual-phase steel and a preparation method thereof, and belongs to the technical field of metallurgy. The chemical components of the hot-rolled acid pickling dual-phase steel comprise 0.05%-0.1% of C, smaller than or equal to 0.1% of Si, 0.6%-1.0% of Mn, 0.02%-0.04% of P, smaller than or equal to 0.006% of S, 0.1%-0.3% of Cr, 0.015%-0.03% of Ti and the balance Fe and unavoidable impurities, and the metallographic structure of the hot-rolled acid pickling dual-phase steel is made of ferrite and martensite. According to the hot-rolled acid pickling dual-phase steel, the tensile strength is higher than or equal to 580 MPa, the yield strength is between 330 MPa and 390 MPa, and the elongation A80 is larger than or equal to 22%.

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