| CHARAC TERIZATION OF TiAl POWDER PRODUCED BY MECHANICAL ALLOYING |
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| 引用本文： | Xiong,Xiang Huang,Baiyun Lei,Changmin Lu,Haibo Central South University of Technology,Changsha 410083,China. CHARAC TERIZATION OF TiAl POWDER PRODUCED BY MECHANICAL ALLOYING[J]. 中国有色金属学会会刊, 1993, 0(2) |
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| 作者姓名： | Xiong Xiang Huang Baiyun Lei Changmin Lu Haibo Central South University of Technology Changsha 410083 China |
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| 作者单位： | Xiong，Xiang Huang，Baiyun Lei，Changmin Lu，Haibo Central South University of Technology，Changsha 410083，China |
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| 摘 要： | The microstructure,alloying reaction and sintering behavior of the powder produced by Mechanical Al-loying(MA)for 8 h from 64 wt.-% Ti powder and 36 wt.-% Al powder were studied by scanning electronmicroscopy,optical microscopy,X-ray diffractometry,differential scanning calorimetry(DSC)and dilatometry.The mechanically alloyed powder partictes are Ti-Al composite particles.Thus,titanium aluminides can formeasily in the powder through diffusion during heat treatment.It is shown that the sintering behavior of this pow-der,different from the behaviors of TiAl alloy powder and mixed powder of 64 wt.-% Ti powder and 36 wt.-%Al powder,changes from expansion at temperatures below 1000℃ to shrinkage at temperatures above 1000℃.Homogeneously alloyed TiAl material with a density over 96% of the theoretical density can be produced fromthe mechanically alloyed powder by compaction-sintering.
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CHARAC TERIZATION OF TiAl POWDER PRODUCED BY MECHANICAL ALLOYING |
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| Xiong,Xiang Huang,Baiyun Lei,Changmin Lu,Haibo Central South University of Technology,Changsha ,China. CHARAC TERIZATION OF TiAl POWDER PRODUCED BY MECHANICAL ALLOYING[J]. Transactions of Nonferrous Metals Society of China, 1993, 0(2) |
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| Authors: | Xiong Xiang Huang Baiyun Lei Changmin Lu Haibo Central South University of Technology Changsha China |
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| Affiliation: | Xiong,Xiang Huang,Baiyun Lei,Changmin Lu,Haibo Central South University of Technology,Changsha 410083,China |
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| Abstract: | |
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| Keywords: | TiAl alloy powder mechanical alloying SEM optical microscopy DSC dilatometry |
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