苗丹阳,唐荻,赵征志,丁然

• 1:北京科技大学冶金工程研究院

摘要(Abstract)：

对传统淬火-配分钢(Q&P钢)添加合金元素Ni和Nb,并对实验钢采用两相区Q&P工艺处理,得到了一种超细晶Q&P钢,分析了实验钢的显微组织和力学性能。结果表明,该种成分钢得到了块状铁素体+块状马氏体+残留奥氏体的混合组织,且晶粒达到了亚微米级别。由于残留奥氏体的相变诱发塑性(TRIP)效应,使得实验钢获得了兼具强度和塑性的优异力学性能。在退火温度为690℃时,实验钢抗拉强度达到1195 MPa,断后伸长率为23.5%,强塑积达到28 GPa·%。

关键词(KeyWords)： 退火温度;Q&P钢;超细晶;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51371032)

作者(Author): 苗丹阳,唐荻,赵征志,丁然

DOI: 10.13289/j.issn.1009-6264.2015.11.022

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