| Grain Refiner for TiAl Intermetallic Compounds |
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| 收稿时间： | 1994-05-28 |
Grain Refiner for TiAl Intermetallic Compounds |
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| Authors: | Yuehui HE Yexiang LIU Baiyun HUANG Xuanhui QU and Changming LEI |
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| Affiliation: | Yuehui HE,Yexiang LIU,Baiyun HUANG,Xuanhui QU and Changming LEI (Powder Metallurgy Research Institute,Central South University of Technology,Changsha,,China) |
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| Abstract: | The effect of BN addition on the grain size and rnechanical properties of Ti-34.1 wt-%Al alloy was investigated. It has been found that BN is an effective grain refiner for TiAl base alloys, The addition of a small arnount of BN to TiAl can change the coarse columnar grains of as-cast rnicrostructure into the fine equiaxed grains. It has been also determined that Ti-34.1 wt-%Al-1.0 wt-%BN alloy has better mechanical properties and microstructure |
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