亚微米晶NiAl-Al2O3复合材料的制备及其烧结-锻造短流程成形

徐桂华 卢振 张凯锋

徐桂华, 卢振, 张凯锋. 亚微米晶NiAl-Al2O3复合材料的制备及其烧结-锻造短流程成形[J]. 航空材料学报, 2011, 31(4): 11-17.
引用本文: 徐桂华, 卢振, 张凯锋. 亚微米晶NiAl-Al2O3复合材料的制备及其烧结-锻造短流程成形[J]. 航空材料学报, 2011, 31(4): 11-17.
XU Gui-hua, LU Zhen, ZHANG Kai-feng. Fabrication of Submicron NiAl-Al2O3 Composite and ItsSinter-Forging with Short Process[J]. Journal of Aeronautical Materials, 2011, 31(4): 11-17.
Citation: XU Gui-hua, LU Zhen, ZHANG Kai-feng. Fabrication of Submicron NiAl-Al2O3 Composite and ItsSinter-Forging with Short Process[J]. Journal of Aeronautical Materials, 2011, 31(4): 11-17.

亚微米晶NiAl-Al2O3复合材料的制备及其烧结-锻造短流程成形

详细信息
    作者简介:

    徐桂华(1982- )男,博士研究生,主要从事NiAl基复合材料的研究,(E-mail)ghxu0507@163.com.

  • 中图分类号: TB333

Fabrication of Submicron NiAl-Al2O3 Composite and ItsSinter-Forging with Short Process

  • 摘要: 以Ni粉和Al粉为原料,通过机械合金化和真空热压烧结制备了高致密的NiAl-5%Al2O3(体积分数,下同)复合材料,并利用烧结-锻造技术制成了该材料的前缘模拟件。机械球磨后,粉末颗粒充分细化,Ni和Al发生原位反应,并最终生成NiAl-5%Al2O3复合材料粉末。经1300℃真空热压烧结,获得致密的NiAl-Al2O3复合材料。Al2O3颗粒以“晶界型”和“内晶型”的形式均匀分布在NiAl基体中。NiAl和Al2O3平均晶粒尺寸约为400nm和100nm。与细晶NiAl相比,材料的断裂韧度明显增加,压缩强度得到很大提高。通过烧结-锻造短流程技术制备的前缘模拟件晶粒细小,表面质量较高,其硬度达575HV以上。

     

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出版历程
  • 收稿日期:  2010-12-03
  • 刊出日期:  2011-08-01

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