• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Microstructure and mechanical properties of a Fe-28Mn-9Al-1.2C-(0, 3, 6, 9)Cr austenitic low-density steel
【24h】

Microstructure and mechanical properties of a Fe-28Mn-9Al-1.2C-(0, 3, 6, 9)Cr austenitic low-density steel

机译：Fe-28Mn-9Al-1.2C-（0,3,6,9）Cr奥氏体低密度钢的微观结构和力学性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, the effects of Cr addition on microstructure, carbide formation and mechanical properties of Fe-28Mn-9Al-1.2C-xCr (x = 0, 3, 6, 9) strips fabricated under a near-rapid solidification condition are investigated. It is found that Cr addition makes as-cast strips present a nonlinear evolution on yield strength, i.e. firstly reduces and then increases beyond that of Cr-free strip, and the total elongation of as-cast strips clearly decreases. The evolution is related to precipitation reduction of κ-carbides, increased dislocation density, and formation of Cr_(23)C_6 instead of κ-carbides in 9Cr strip with Cr addition. Annealing at 550 °C for 5 h enhances yield strengths of all strips due to more carbide precipitations. An observed unusual phenomenon is that after annealing, Cr-free strip shows lower total elongation than the as-cast strip, while all Cr-containing strips show higher total elongation due to reduction of dislocations. Formation of Cr_(23)C_6 carbides at austenite grain boundaries is a reason for the lowest ductility of as-cast and annealed strips containing 9 wt% Cr. Analysis in 0Cr and 6Cr strips indicates that both slip bands and dislocations contribute to ductility of this austenitic low-density steel.
机译：在这项工作中，研究了Cr添加对在近快速凝固条件下制造的Fe-28Mn-XC-1.2C-XCR（X = 0,3,6,6）条的Fe-28Mn-XC-1.2C-XCR（X = 0,3,6,6）条的微观结构，碳化物形成和机械性能的影响。结果发现Cr加入使得铸造条带上屈服强度的非线性演化，即首先减少，然后增加了超出Cr的条带的延伸，并且浇铸条的总伸长率清楚地降低。进化与κ-碳化物的沉淀降低，增加的位错密度增加和Cr_（23）C_6的形成，而不是9Cr条带中的κ-碳化物。在550℃下退火5小时，由于更多的碳化物沉淀，因此引起所有条带的屈服强度。观察到的不寻常的现象是在退火后，Cr-Fiel条带显示出比AS铸带的较低的总伸长率，而所有含C的条带由于减少脱位而显示出更高的总伸长率。在奥氏体晶界的C_6碳化物的形成是含有9wt％Cr的浇铸和退火条的最低延展性的原因。在0CR和6CR条带中分析表明，滑动带和脱位均有助于这种奥氏体低密度钢的延展性。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第21期|141583.1-141583.11|共11页
  • 作者

    Yuxiang Liu; Mingxiang Liu; Jianlei Zhang; Wei He; Zhiping Luo; Changjiang Song; Qijie Zhai;

  • 作者单位

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Department of Chemistry Physics and Materials Science Fayetteville State University Fayetteville NC 28301 USA;

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

    Center for Advanced Solidification Technology (CAST) State Key Laboratory of Advanced Special Steels School of Materials Science and Engineering Shanghai University Shanghai 200444 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Low-density steel; Mechanical property; Near-rapid solidification; Heat treatment; Microstructure;

    机译：低密度钢;机械性质;近快速凝固;热处理;微观结构;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号