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热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能

徐建林, 甄乾, 张兴华, 马吉强, 李斐, 杨军

徐建林, 甄乾, 张兴华, 马吉强, 李斐, 杨军. 热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能[J]. 机械工程材料, 2013, 37(10): 34-38.
引用本文: 徐建林, 甄乾, 张兴华, 马吉强, 李斐, 杨军. 热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能[J]. 机械工程材料, 2013, 37(10): 34-38.
shu
XU Jian-lin, ZHEN Qian, ZHANG Xing-hua, MA Ji-qiang, LI Fei, YANG Jun. Microstructures and Properties of Al2O3/Fe-28Al-5Cr Composites Prepared by Hot-Pressed Sintering[J]. Materials and Mechanical Engineering, 2013, 37(10): 34-38.
Citation: XU Jian-lin, ZHEN Qian, ZHANG Xing-hua, MA Ji-qiang, LI Fei, YANG Jun. Microstructures and Properties of Al2O3/Fe-28Al-5Cr Composites Prepared by Hot-Pressed Sintering[J]. Materials and Mechanical Engineering, 2013, 37(10): 34-38.
shu

热压烧结Al2O3/Fe-28Al-5Cr复合材料的组织和性能

  • 1.

    兰州理工大学材料科学与工程学院, 兰州730050

  • 2.

    中国科学院兰州化学物理研究所固体润滑国家重点实验室, 兰州730000

基金项目: 

国家自然科学基金资助项目(51275507

51201172)

详细信息
    作者简介:

    徐建林(1970-), 男, 甘肃兰州人, 教授, 博士。

  • 中图分类号: TB332

Microstructures and Properties of Al2O3/Fe-28Al-5Cr Composites Prepared by Hot-Pressed Sintering

摘要

    摘要
  • 摘要: 在自制的Fe-28Al-5Cr合金粉中加入质量分数为10%和20%Al2O3陶瓷颗粒, 采用热压烧结技术制备了Fe-28Al-5Cr基复合材料, 研究了Al2O3加入量对复合材料组织、力学性能及高温耐磨性能的影响。结果表明: 所制备复合材料的相对密度达到99%以上, 复合材料由Fe3Al基体和Al2O3增强相组成; Al2O3在复合材料中主要分布在晶界处, 当Al2O3的加入量为20%时, 形成了连续的网状结构; 复合材料的强度比基体合金的低, 且其强度随Al2O3含量的增加而降低, 但加入20%Al2O3的复合材料的高温耐磨性能比基体合金的有明显改善。
    Abstract: Fe-28Al-5Cr based composites were prepared by adding 10wt% and 20wt% Al2O3 ceramic particles into self-made Fe-28Al-5Cr alloy powders and following hot-pressed sintering, and the effects of Al2O3 content on microstructure, mechanical and high-temperature wear properties of the composites were studied. The results show that the relative density of the composites up to 99%, and the composites were composed of Fe3Al matrix and Al2O3 enhanced phase. Al2O3 mainly distributed at grain boundary of Fe3Al, which leaded to the formation of net-structured Al2O3 when Al2O3 adding contents reached to 20wt%. The strength of the composites was lower than that of the matrix, and it decreased with the increase of Al2O3 adding contents, but the high-temperature wear resistance of the composite with 20wt% Al2O3 was improved obviously comparing with that of the matrix.
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    • 参考文献(18)
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出版历程
  • 收稿日期:  2013-06-19
  • 刊出日期:  2013-10-19

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