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Superplasticity in NiAl and NiAl-based alloys

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摘要

Superplastic deformation was realized on NiAl and NiAl-based alloys prepared by both common casting and directional solidification. Directionally solidified NiAl-27Fe-3Nb alloy as well as conventionally cast NiAl, NiAl-25Cr, NiAl-9Mo, NiAl-20Fe-Y.Ce, and NiA1-30Fe-Y alloys exhibited typical deformation characteristics shown in conventionally superplastic materials. NiAl and NiAl-based alloys could be divided into three categories depending on their different superplastic behavior: finely grained structure (NiAl-9Mo, NiAl-25Cr, NiAl-20.4Fe-Y.Ce, NiAl-30Fe-Y), coarsely grained structure (NiAl), and columnar structure (NiAl-27Fe-3Nb). The corresponding deformation mechanisms for fine-grained structure, coarsely grained structure, and columnar structure were grain boundary sliding or grain boundary sliding accompanied by dynamic recrystallization, dynamic recovery and recrystallization, and intragrain dislocation slip, respectively.

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  • 来源
    《Journal of Materials Research》 |2002年第9期|2346-2356|共11页
  • 作者

    J.T. Guo; X.H. Du; L.Z. Zhou;

  • 作者单位

    Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 工程材料学;
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