Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn-xW Alloy
文献类型：期刊论文
| 作者 | Li Xiaobing2; Qian Kun2; Shu Lei2; Zhang Mengshu2; Zhang Jinhu1; Chen Bo2; Liu Kui2 |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2023-10-11 |
| 卷号 | 59期号:10页码:1401-1410 |
| 关键词 | TiAl alloy W content phase transformation lamellar structure grain refinement |
| ISSN号 | 0412-1961 |
| DOI | 10.11900/0412.1961.2022.00119 |
| 通讯作者 | Chen Bo(chenbo@jihualab.ac.cn) |
| 英文摘要 | Advanced intermetallic beta-solidifying gamma-TiAl-based alloys have various potential applications in the aerospace and automobile industries due to their low density, functionality at higher temperatures, and high specific strength/modulus. The crucial aspect that needs to be considered when developing a new beta-solidifying gamma-TiAl alloy is to clarify the influence law of beta-stabilizer elements on the phase transformation behavior of gamma-TiAl alloys. In this work, the impact of W contents (0.5%-1.0%, atomic fraction) on the phase transformation behavior and microstructure characteristics of Ti-42Al-5Mn-xW (atomic fraction) alloy with low cost and superior temperature workability was systematically investigated. The findings demonstrate that there were minor changes in the beta-phase single region temperature (T-beta) and gamma phase solvus temperature (T gamma-solv); furthermore, the eutectoid reaction temperature (T-eut) increases with the W content from 0.5% to 1.0%. Addition of W influences the solid phase transformation pathway to a certain extent. When the concentration of W increases to 0.5%, the equilibrium phase of the alloy at near service temperature gradually changes from alpha(2) + gamma + Laves to beta(o) + alpha(2) + gamma + Laves. Additionally, W addition will also have a substantial effect on the lamellar microstructure. The volume fraction of lamellar microstructure considerably decreased after alloying with (0.5%-1.0%)W for Ti-42Al-5Mn alloy when being treated in the (gamma + alpha + beta) triple-phase region followed by furnace cooling. Increasing the W content to 0.8% and 1.0% results in the development of gamma and beta(o) grain phases with almost complete removal of alpha(2)/gamma lamellar structures. However, the W-free and W-bearing Ti-42Al-5Mn alloys show near complete lamellar structures when treated in (alpha + beta) two-phase region followed by furnace cooling. Furthermore, when the content of W increased from 0.5% to 1.0%, an equiaxed grain structure with refined lamellar colonies is typically obtained. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001087007200011 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178030]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Ji Hua Lab, Dept Mat Sci & Technol Res, Foshan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Xiaobing,Qian Kun,Shu Lei,et al. Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn-xW Alloy[J]. ACTA METALLURGICA SINICA,2023,59(10):1401-1410. |
| APA | Li Xiaobing.,Qian Kun.,Shu Lei.,Zhang Mengshu.,Zhang Jinhu.,...&Liu Kui.(2023).Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn-xW Alloy.ACTA METALLURGICA SINICA,59(10),1401-1410. |
| MLA | Li Xiaobing,et al."Effect of W Content on the Phase Transformation Behavior in Ti-42Al-5Mn-xW Alloy".ACTA METALLURGICA SINICA 59.10(2023):1401-1410. |
入库方式： OAI收割
来源：金属研究所
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