庄栋栋,王作成,薛长深,陈陪敦,陈坤,马正伟,谷国华

• 1:山东大学材料液固结构演变与加工教育部重点实验室
• 2:山东大学材料科学与工程学院
• 3:山东泰山钢铁集团

摘要(Abstract)：

通过拉伸试验检测了单机架可逆轧制冷轧压下率为68%低碳铝镇静钢板力学性能,用金相显微镜观察试验钢板冷轧态与退火态的纤维组织,并用X射线衍射仪测量试验钢中不同类型织构的含量。结果表明,退火温度由660℃升高至720℃,低碳铝镇静钢的屈服强度为201～212 MPa,抗拉强度为278～311 MPa,屈强比为0.68～0.72,总伸长率为38%～42%,加工硬化指数n值为0.21～0.24,而塑性应变比r值为1.25～1.58,|△r|值为0.39～0.78。退火温度的升高使得再结晶后晶粒尺寸增加和"饼型"程度加大,γ纤维织构强度增加。当退火温度升高至720℃时,再结晶晶粒尺寸不均匀,|△r|值较大,且抗拉强度明显降低。综合作用的结果是,退火温度在680～700℃范围时较为合适,深冲性能较好。

关键词(KeyWords)： 低碳铝镇静钢板;织构;退火温度;深冲性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 庄栋栋,王作成,薛长深,陈陪敦,陈坤,马正伟,谷国华

DOI: 10.13289/j.issn.1009-6264.2013.06.020

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