MICROSTRUCTURE OF RAPIDLY SOLIDIFIED TiAl ALLOY POWDER

被引：0
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作者：
CAO Mingzhou HAN Dong ZHANG Tao LI Dong Institute of Metal Research
机构：
来源：
Acta Metallurgica Sinica(English Edition) | 1993年 / 02期
关键词：
repid solidification; TiAl intermetallic compound; microstructure;
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摘要：
The rapidly solidified powder of Ti-34Al-2Mn alloy was obtained by means of ultrasonicgas atomisation (USGA) technique.The tupical size of the powder is 27 μm.X-ray diffractionresults show that the powder consists of major α-phase and minor γ-phase.Under opticalmicroscope both equiaxed and dendritical microstructure features were observed on RS pow-der sections.After annealing at 900 ℃/for 2 h in vacuum,most of α-phase transforms intoγ-phase,resulting in refinement of structure.
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页码：117 / 120
页数：4
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