蒯振,陈银莉,庄宝潼,赵爱民,姜英花

• 1:北京科技大学冶金工程研究院
• 2:首钢技术研究院

摘要(Abstract)：

研究一种新型的两相区不同退火温度的淬火和碳再分配热处理工艺对低碳硅-锰系Q&P钢的显微组织、精细结构的影响,并和奥氏体区退火的Q&P热处理工艺进行对比。通过SEM、TEM分析发现,采用两相区退火的Q&P工艺室温组织为板条马氏体、铁素体和薄膜状残留奥氏体。残留奥氏体以两种形态存在:处于马氏体板条间的薄膜状和位于原奥氏体晶界处的块状。两相区热处理后的Q&P钢,不仅抗拉强度高达1000 MPa以上,其伸长率也高达23%以上,体积分数高达11%的残留奥氏体在组织中起到了相变诱发塑性的作用。

关键词(KeyWords)： Q&P;板条马氏体;残留奥氏体;TRIP效应;两相区退火

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划资助项目(2008AA03Z502)

作者(Author): 蒯振,陈银莉,庄宝潼,赵爱民,姜英花

DOI: 10.13289/j.issn.1009-6264.2012.12.018

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