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应用科学学报 ›› 2001, Vol. 19 ›› Issue (1): 77-80.

• 论文 • 上一篇    下一篇

Ni3Al（Cr）为基原位复合微晶合金的研究

林一坚   

  1. 上海市金属功能材料重点实验室, 上海 200940
  • 收稿日期:2000-01-07 修回日期:2000-03-12 出版日期:2001-03-31 发布日期:2001-03-31
  • 作者简介:林一坚(1947-),男,上海人,高级工程师,博士.
  • 基金资助:
    上海大学上海高校材料微观结构与性能重点实验室资助项目

A Study on Ni3Al(Cr)-base in-situ Composite Microcrystalline Alloy

LIN Yi-jian   

  1. Shanghai Key Laboratory of Metallic Functional Materials, Shanghai 200940, China
  • Received:2000-01-07 Revised:2000-03-12 Online:2001-03-31 Published:2001-03-31

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摘要： 提出将金属间化合物与快速凝固微晶材料的制备工艺结合起来开发新型材料的思路,制备出以Ni3Al(Cr)为基,用M3B2颗粒增强和稳定的,具有均匀亚微米尺度的原位复合微晶合金.该微晶组织具有很高的稳定性,经1000℃退火未发生粗化.该微晶合金保持了基体Ni3Al相的高温力学性能,从室温到650℃以上保持HV≈580的高硬度.

关键词: Ni3Al, 微晶合金, 原位复合材料, 快速凝固

Abstract: It was proposed that fabricating intermetallics with the rapid-solidification technique for micro-crystalline alloys would be a promising way to develop high-performance materials. A Ni3Al(Cr) base micro-crystalline alloy, strengthened and stabilized by M3B2 boride particles, was designed and prepared. The alloy has a uniform sub-micron-scale refined micro-structure, which is stable without coarsening even after 1000℃ anneal when subjected to high temperature. It retains a high hardness of HV≈580 from room temperature up to at least 650℃, which is related to the characteristic high temperature strength of Ni3Al phase and the strengthening effect of M3B2 particles.

Key words: microcrystalline alloy, in-situ composite materials, rapid solidification, Ni3Al

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