| 元素粉末冶金方法制备TiAl基合金 |
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| 引用本文： | 刘咏,黄伯云,贺跃辉,杨兵.元素粉末冶金方法制备TiAl基合金[J].粉末冶金材料科学与工程,1999(3). |
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| 作者姓名： | 刘咏 黄伯云 贺跃辉 杨兵 |
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| 作者单位： | 粉末冶金国家重点实验室，粉末冶金国家重点实验室，粉末冶金国家重点实验室，粉末冶金国家重点实验室 长沙 410083，长沙 410083，长沙 410083，长沙 410083 |
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| 基金项目： | 国家“863”高技术计划资助项目 |
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| 摘 要： | 详细介绍了采用元素粉末冶金方法制备TiAl基合金的机理、工艺方法及材料性能,元素Ti,Al粉末在一定温度下的反应合成主要由扩散控制,包括产生TiAl_3相和TiAl_2相的中间化过程,元素粉末冶金TiAl合金的工艺方法有元素粉末Ti,Al的反应烧结、热压或热等静压,热爆合成,元素TiAl箔片的反应合成等,采用这些方法制备的TiAl基合金具有均匀、细小的组织,但其力学性能受氧含量及孔隙的严重影响。
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| 关 键 词： | TiAl基合金 粉末冶金 制备 |
MANUFACTURING TiAI BASED ALLOY THROUGH ELEMENTAL POWDER METALLURGY PROCESS |
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| Liu Yong Huang Baiyun He Yuehui Yang Bing.MANUFACTURING TiAI BASED ALLOY THROUGH ELEMENTAL POWDER METALLURGY PROCESS[J].materials science and engineering of powder metallurgy,1999(3). |
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| Authors: | Liu Yong Huang Baiyun He Yuehui Yang Bing |
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| Abstract: | The theory, process and material properties of TiAl based alloy prepared by elemental P/M were described. The reaction of elemental Ti, A1 powders at certain temperature is diffusion controlled, including intermediate steps in which TiAI3 and TiAl_2 phases exist. The methods for elemental P/M process of TiAl based alloy include: reaction sintering, hot pressing, HIP of elemental Ti, Al powders, hot explosion synthesis, elemental Ti, Al foil metallurgy etc. Through these process, TiAl based alloys exhibit fine, homogeneous microstructure, while their mechanical properties are greatly affected by high content of impurities and porosity. |
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| Keywords: | TiAl based alloy powder metallurgy |
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