王立辉,唐荻,赵爱民,江海涛

• 1:北京科技大学高效轧制国家工程研究中心
• 2:武汉钢铁(集团)公司研究院

摘要(Abstract)：

研究了不同RE含量对TRIP/TWIP钢组织和性能的影响,利用拉伸试验机测试其力学性能和OM及TEM观察其微观结构变化。结果表明,变形前组织以奥氏体为主,亚结构为退火孪晶和高密度的平面位错,变形后有大量形变孪晶亚结构出现,且有α马氏体组织产生,证实发生了TRIP效应和TWIP效应,变形后孪晶衍射花样观察发现在两个斑点之间有暗线,表明有层错存在。发现随着RE含量的增加,形变孪晶变短而且数量变少,证实RE有抑制TWIP效应的作用,TWIP效应减弱导致n值明显减小,且RE细化了晶粒,导致了强度和屈强比提高。

关键词(KeyWords)： 孪晶诱导塑性效应;相变诱导塑性效应;稀土;组织;性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51371032,51271035)

作者(Author): 王立辉,唐荻,赵爱民,江海涛

DOI: 10.13289/j.issn.1009-6264.2016.02.019

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