李楠,时捷,王存宇,赵晖,陈为亮,惠卫军,曹文全

• 1:昆明理工大学冶金与能源工程学院
• 2:钢铁研究总院结构材料研究所

摘要(Abstract)：

研究了650℃下退火时间对冷轧Fe-0.14C-5Mn钢的组织结构和力学性能的影响规律,利用SEM进行了组织结构表征,采用XRD法测量了残留奥氏体量,通过拉伸试验机测试了钢的单轴拉伸性能。结果表明,退火过程中发生奥氏体逆转变,退火1min以后即形成20%以上的亚稳奥氏体;随退火时间的延长,抗拉强度(Rm)逐渐升高,屈服强度逐渐降低;断后伸长率(A)和强塑积(Rm×A)先升高而后降低,在650℃退火10 min时塑性(46%)和强塑积(46 GPa%)获得最大值。分析认为高含量亚稳奥氏体相的TRIP效应以及超细的晶粒尺寸是获得超高强度、超高塑性及高的强塑积的主要原因。

关键词(KeyWords)： 冷轧中锰钢;两相区退火;亚稳奥氏体;超细晶;TRIP效应

Abstract:

Keywords:

基金项目(Foundation): 国家“973”计划项目(2010CB630803);; 国家“863”计划项目(2009AA033401,2009AA03Z519)

作者(Author): 李楠,时捷,王存宇,赵晖,陈为亮,惠卫军,曹文全

DOI: 10.13289/j.issn.1009-6264.2011.08.014

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