章小峰,冷德平,张龙,黄贞益,陈光

• 1:安徽工业大学冶金工程学院
• 2:南京理工大学材料科学与工程学院

摘要(Abstract)：

研究了合金元素Al对3种不同Al含量的Fe-28Mn-x Al-1C(x=8,10,12)系低密度钢层错能的影响。结果表明,3种实验钢的层错能范围为67.76~90.64 m J/m~2,Al对层错能的影响呈多项式分布。与28Mn-10Al及28Mn-8Al合金相比,28Mn-12Al合金层错能较高,抗拉强度高但伸长率低,在相同变形量下,28Mn-8Al与28Mn-10Al合金均出现了孪晶组织,且28Mn-8Al中孪晶更明显,而28Mn-12Al合金中未发现孪晶。3种合金的变形机制均为平面滑移变形,这归因于Fe-Mn-Al-C系合金中存在的短程有序会导致"滑移面软化现象",使高层错能的28Mn-12Al合金变形机制也为平面滑移。

关键词(KeyWords)： 高含Al低密度钢;层错能;变形机制;形变孪晶

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金(2014M561648)

作者(Author): 章小峰,冷德平,张龙,黄贞益,陈光

DOI: 10.13289/j.issn.1009-6264.2015.12.022

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