杨浩,杨汉,曲锦波

• 1:江苏省沙钢钢铁研究院

摘要(Abstract)：

采用控轧+两相区淬火+回火(TMCP+Q'+T)工艺制备了690 MPa级低屈强比高强度结构钢,重点研究了两相区淬火温度和回火温度对实验钢组织性能的影响。结果表明,随着两相区淬火温度的升高,实验钢中铁素体相体积分数减少,铁素体的形貌由多边形转变为针片状且更加细小均匀,马氏体相的体积分数逐渐增加,尺寸变大,但实验钢的力学性能并未出现明显的变化;随着回火温度升高,实验钢中针片状的铁素体发生回复再结晶,马氏体发生分解,实验钢的塑性和韧性提高,但强度降低,屈强比升高。

关键词(KeyWords)： 屈强比;两相区淬火;回火;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨浩,杨汉,曲锦波

DOI: 10.13289/j.issn.1009-6264.2013.05.027

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