Effect of Ho additions on the microstructure and mechanical properties of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys
文献类型：期刊论文
| 作者 | Y. X. Tian ; J. T. Guo ; Y. C. Liang ; C. L. Wu ; L. Z. Zhou ; H. Q. Ye |
| 刊名 | International Journal of Materials Research
 |
| 出版日期 | 2007 |
| 卷号 | 98期号:6页码:511-515 |
| 关键词 | Nb5Si3 microstructure mechanical properties Ho in-situ composites temperature fracture-toughness solid-solution crack-growth cr additions nb mo strength ti al |
| ISSN号 | 1862-5282 |
| 中文摘要 | The effect of Ho additions on the microstructure and compressive properties of the alloy Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf (at.%) was investigated by using scanning electron microscopy, X-ray diffraction, transmission electron microscopy and by performing compression tests. The results show that Ho additions cause remarkable microstructural refinement. The addition of 0.1 at.% Ho to the alloy increases its strength and ductility. When the amount of Ho is increased to 0.2 at.%, the strength and ductility decreases. Ho addition inhibits the formation of the (Ti, Nb)(5)Si-3 phase and the amount of the (Ti, Nb)(5)Si-3 phase decreases. even disappears, with increasing Ho content. In addition, the fracture surfaces of Ho-free alloys deformed at room temperature in compression tests exhibit cleavage for both the (Nb, Ti) solid solution and the (Nb, Ti)(5)Si-3 intermetallic compound, while limited local plastic strain of the (Nb, Ti) solid solution is observed in Ho-doped alloys. The effect and mechanism of strengthening and plastic deformation of Ho additions to the alloy was discussed in view of the microstructure. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33838]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Y. X. Tian,J. T. Guo,Y. C. Liang,et al. Effect of Ho additions on the microstructure and mechanical properties of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys[J]. International Journal of Materials Research,2007,98(6):511-515. |
| APA | Y. X. Tian,J. T. Guo,Y. C. Liang,C. L. Wu,L. Z. Zhou,&H. Q. Ye.(2007).Effect of Ho additions on the microstructure and mechanical properties of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys.International Journal of Materials Research,98(6),511-515. |
| MLA | Y. X. Tian,et al."Effect of Ho additions on the microstructure and mechanical properties of Nb-22Ti-16Si-7Cr-3Al-3Ta-2Hf alloys".International Journal of Materials Research 98.6(2007):511-515. |
入库方式： OAI收割
来源：金属研究所
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