| Influence of yttrium on microstructure and properties of Ti-23Al-25Nb alloy after heat treatment |
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| 作者姓名： | 司玉锋 陈玉勇 刘志光 孔凡涛 |
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| 作者单位： | School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China |
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| 基金项目： | Project（50274035） supported by the National Natural Science Foundation of China |
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| 摘 要： | The existence of yttrium in Ti-23Al-25Nb alloy and its influence on the microstructure after heat treatment of Ti-23Al-25Nb alloy were investigated using thermal analysis（DTA）, EPMA, XRD and SEM. The heat treatment was determined based on DTA measurements. The compression tests at room temperature were performed on a Instron-569 universal tester. The results show that yttrium exists as the Y2O3 alloy. The addition of Y doesn＇t affect the characteristic phase transformation temperature At lower quenching temperature, Y strengthens the XRD peaks of O phase by improving the decomposition of B2 phase. Yttrium addition enhances the compression properties with the compression strength, yield strength and compression ratio increasing. The strengthening is attributed to the second phase strengthening of Y2O3 particles and the grain refinement.
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| 关 键 词： | Ti-23Al-25Nb合金 钇 显微结构 力学性质 热处理 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-25 |
Influence of yttrium on microstructure and properties of Ti-23Al-25Nb alloy after heat treatment |
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| SI Yu-feng, CHEN Yu-yong, LIU Zhi-guang, KONC Fan-tao.Influence of yttrium on microstructure and properties of Ti-23Al-25Nb alloy after heat treatment[J].Transactions of Nonferrous Metals Society of China,2006,16(B02):849-853. |
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| Authors: | SI Yu-feng CHEN Yu-yong LIU Zhi-guang KONC Fan-tao |
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| Abstract: | |
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| Keywords: | Ti-23Al-25Nb alloy yttrium microstructure mechanical property |
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