590 MPa建筑用低屈强比耐火钢的研制  

Research on 590 MPa Grade Low Yield Ratio Steel with Fire-resistant for Construction

作　　者：于庆波[1] 孙莹[1] 

机构地区：[1]徐州工程学院机电工程学院,江苏徐州221008

出　　处：《热加工工艺》2014年第20期31-33,共3页Hot Working Technology

基　　金：江苏省自然科学基金项目(BK20131123);江苏省第四期"333工程"培养资金资助项目(BRA2011037);江苏省"六大人才高峰"资助项目(2012-ZBZZ-007);住房与城乡建设部研究开发项目(2013-K4-28;2014-K4-005);徐州工程学院校级科研项目(XKY2012101;XKY2012211)

摘　　要：通过加入微合金元素并与控轧控冷工艺相结合,开发出590 MPa建筑用低屈强比耐火钢。结果表明,该钢种屈服强度大于460 MPa,抗拉强度大于590 MPa,屈强比小于0.8,600℃的屈服强度大于室温的2/3,能满足590 MPa级建筑用低屈强比耐火钢的力学性能要求。590MPa grade low yield ratio steel with fire-resistant for construction was investigated by the combination of microalloy technology and thermo-mechanical control process. The results show that the yield strength of the steel is more than 460 MPa. The tensile strength is more than 590 MPa. The yield ratio is lower than 0.8, and the yield strength at 600℃ is more than 2/3 times than that at room temperature strength, which can satisfy the mechanical property requirements for 590 MPa grade low yield ratio steel with fire-resistant for construction.

关 键 词：微合金化 屈强比 耐火钢 

分 类 号：TG113.25[金属学及工艺—物理冶金]