10.3969/j.issn.1003-8620.2014.05.014
600 MPa低硅Nb-Ti微合金化优质3.5mm热轧双相钢板的开发
通过真空感应炉熔炼和浇铸的50 kg锭锻成40 mm× 150 mm坯和热轧成10 mm板以及热模拟试验研究了开发的低硅Nb-Ti微合金化双相钢(/%:0.082C,0.15Si,1.20Mn,0.010P,0.002S,0.020Nb,0.015Ti,0.045Al,0.003 5 N)静态和动态连续冷却转变(CCT)曲线、组织(11%马氏体+89%铁素体)和力学性能(抗拉强度682 MPa).并通过铁水脱硫-260 t BOF-LF-RH-230 mm×1 300 mm连铸-热轧工艺试制了低硅双相钢(/%:0.075C,0.15Si,1.16Mn,0.012P,0.003S,0.016Nb,0.015Ti,0.033Al,0.004 3 N) 3.5mm板.结果表明,精轧出口温度810℃,水冷至700℃,空冷4.5s,卷取温度150℃时,该钢的组织为15%马氏体+85%铁素体,晶粒度12~ 12.5级,抗拉强度672~692 MPa,伸长率24.0%~28.5%,屈强比0.65~0.67,钢板冲压成塑性能优良,制造的轿车轮辐弯曲疲劳性能15×104次.
600 MPa低硅Nb-Ti微合金化双相钢、3.5 mm板、开发
35
S64;TG2
2014-10-09(万方平台首次上网日期,不代表论文的发表时间)
共3页
47-49