| Effects of boron addition on the microstructure and mechanical property of As-cast Ti-46.5Al-8Nb alloy | |
| Jiang Zhiguo; Chen Bo; Ma Yingche; Zhao Xiujuan; Liu Kui; Li Yiyi | |
| Corresponding Author | Liu Kui(kliu@imr.ac.cn) |
| 2007-05-01 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 43Issue:5Pages:487-492 |
| Abstract | Boron addition (<= 0.7%, atomic fraction) in fully lamellar Ti-46.5Al-8Nb alloys could refine the grain size and the critical content is about 0.5%. The refining mechanism is controlled both by additive composition supercooling induced by boron at the solidification front and the precipitated boride pinning grain boundaries. Interlamellar spacing (lambda) increases with more boron added because boron could reduce the undercooling of the lamellar formation, and lambda value has linear relationship with the grain size d(-1/2). The higher the alpha(2) volume fraction in the as-cast alloy, the higher the hardness. The ultimate strength (sigma(b)) and elongation (delta) are improved when boron content increases. sigma(b) and grain size follows the Hall-Petch relationship. |
| Keyword | Ti-Al alloy boron microstructure mechanical property |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000247026200008 |
| Publisher | SCIENCE CHINA PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/89488 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu Kui |
| Affiliation | Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Jiang Zhiguo,Chen Bo,Ma Yingche,et al. Effects of boron addition on the microstructure and mechanical property of As-cast Ti-46.5Al-8Nb alloy[J]. ACTA METALLURGICA SINICA,2007,43(5):487-492. |
| APA | Jiang Zhiguo,Chen Bo,Ma Yingche,Zhao Xiujuan,Liu Kui,&Li Yiyi.(2007).Effects of boron addition on the microstructure and mechanical property of As-cast Ti-46.5Al-8Nb alloy.ACTA METALLURGICA SINICA,43(5),487-492. |
| MLA | Jiang Zhiguo,et al."Effects of boron addition on the microstructure and mechanical property of As-cast Ti-46.5Al-8Nb alloy".ACTA METALLURGICA SINICA 43.5(2007):487-492. |
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