| 镍对TiAl合金层片状组织分解的影响 |
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| 引用本文： | 毛磊,刘宗茂,孙世清,胡建文,张继.镍对TiAl合金层片状组织分解的影响[J].河北科技大学学报,2000,21(2):39-42. |
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| 作者姓名： | 毛磊 刘宗茂 孙世清 胡建文 张继 |
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| 作者单位： | 1. 河北科技大学材料科学与工程系,河北石家庄,050018
2. 北京钢铁研究总院第五研究室,北京,100000 |
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| 摘 要： | 对镍原子百分数分别为０％，０．２％和０．５％的ＴｉＡｌ合金试样在１０５０℃和１１５０℃进行了层片组织分解退火实验。并对ＴｉＡｌ合金的铸态组织和不同条件下退火的组织进行了金相分析。结果表明：镍的加入细化了合金的铸态组织，促进了层片组织分解，显著缩短了分解退火时间。镍原子百分数为０．５％的ＴｉＡｌ合金在１１５０℃下退火１６８ ｈ即可获得均匀细小的等轴近γ组织。
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| 关 键 词： | 镍 TiAl合金 层片组织分解 FL组织 近γ组织 |
| 修稿时间： | 1999-04-01 |
Effects of Nickel on Dissolution of Lamellar Microstructure of TiAl Alloys |
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| MAO Lei,LIU Zong-mao,SUN Shi-qing,HU Jian-wen,ZHANG Ji.Effects of Nickel on Dissolution of Lamellar Microstructure of TiAl Alloys[J].Journal of Hebei University of Science and Technology,2000,21(2):39-42. |
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| Authors: | MAO Lei LIU Zong-mao SUN Shi-qing HU Jian-wen ZHANG Ji |
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| Abstract: | Dissolving annealing experiments at 1 050 ℃ and 1 150 ℃ of lamellar microstructures of TiAl alloys containing Ni 0%, 0.2%, and 0.5% have been carried. And casting and annealing constructures have been observed by metallograph. Results showed: addition of Ni fines casting constructures, accelerates dissolution of lamellar constructures,and shortens remarkably dissolving annealing time of TiAl alloy. For the alloy containing Ni 0. 5 %,fine equiaxial near γ constructure can be obtained by annealing in 1150 ℃× 168 h conditions. |
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| Keywords: | Ni TiAl alloys lamellar microstructure dissolution FL constructure near γ constructure |
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