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快凝AlCrYZr合金挤压成形与组织性能

肖于德, 黎文献, 李松瑞, 马正青

肖于德, 黎文献, 李松瑞, 马正青. 快凝AlCrYZr合金挤压成形与组织性能[J]. 粉末冶金技术, 2000, 18(1): 23-27.
引用本文: 肖于德, 黎文献, 李松瑞, 马正青. 快凝AlCrYZr合金挤压成形与组织性能[J]. 粉末冶金技术, 2000, 18(1): 23-27.
Xiao Yude, Li Wenxian, Li Songrui, Ma Zhengqing. EXTRUSION FORMING OF RAPIDLY SOLIDIFIED AlCrYZr ALUMINUM ALLOYS AND THEIR MICROSTRUCTURES AND TENSILE PROPERTIES[J]. Powder Metallurgy Technology, 2000, 18(1): 23-27.
Citation: Xiao Yude, Li Wenxian, Li Songrui, Ma Zhengqing. EXTRUSION FORMING OF RAPIDLY SOLIDIFIED AlCrYZr ALUMINUM ALLOYS AND THEIR MICROSTRUCTURES AND TENSILE PROPERTIES[J]. Powder Metallurgy Technology, 2000, 18(1): 23-27.

快凝AlCrYZr合金挤压成形与组织性能

基金项目: 

国家高技术“863”计划新材料领域资助项目及国家“九五”攻关项目

详细信息
    作者简介:

    肖于德,博士,副教授,主要从事快速凝固耐热铝合金的研究

EXTRUSION FORMING OF RAPIDLY SOLIDIFIED AlCrYZr ALUMINUM ALLOYS AND THEIR MICROSTRUCTURES AND TENSILE PROPERTIES

  • 摘要: 添加Y合金化、配制AlCrYZr合金,采用金相、X射线衍射、透射电镜、扫描电镜、力学拉伸实验等研究手段,研究了快速凝固AlCrYZr合金粉末挤压成形工艺以及其对组织性能的影响。结果表明,实验合金中主要第二相为Al20Cr2Y(立方,a=1.44nm)和Al3Zr;挤压成形时提高挤压比,降低挤压温度,有利于改善粉体结合状况,得到Ll2Al3Zr质点,同时细化Al20Cr2Y质点,使合金获得动态回复组织,从而使合金具有良好的低温、高温强度和塑性。
    Abstract: An AlCrYZr aluminum alloy was made up by adding alloy element yttrium. By using of optical microscopy, x-ray diffration, transsion electron microscopy, scanning eletron microscopy and tensile test, extrusion forming process of rapidly solidified powder of AlCrYZr aluminum alloy was studied and its effect on microstrutures and mechanical properties of the alloys were investigated. The results show, the main second phase of the testing alloy are Al20Cr2Y(Cubic, a=1.44 nm) and DO23Al3Zr,and to increase extrusion ratio and lower extrusion temperature during extrusion forming is benificial for improving binding state of powder, obtaining Ll2Al3Zr precipitated particle and making Al20Cr2Y particle fine and then getting dynamic recovery microstructure in the aluminum matrix, therefore, the alloy prepared by using a suitable consolidation roue has good strength and plasticity at room temperature and evelated temperature.
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出版历程
  • 收稿日期:  1998-11-17

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