CAO Mingzhou HAN Dong ZHANG Tao LI Dong Institute of Metal Research
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Academia Sinica
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Shenyang
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China Associate Professor
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Institute of Metal Research
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Academia Sinica
,
Shenyang 110015
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China
金属学报(英文版)
The rapidly solidified powder of Ti-34Al-2Mn alloy was obtained by means of ultrasonic gas atomisation (USGA) technique.The tupical size of the powder is 27 μm.X-ray diffraction results show that the powder consists of major α_2-phase and minor γ-phase.Under optical microscope 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_2-phase transforms into γ-phase,resulting in refinement of structure.
关键词:
repid solidification
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