Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy
文献类型：期刊论文
| 作者 | Gong, Delun3,5; Wang, Haoliang1; Wang, Qiushuang3,5; Li, Shujun3; Lin, Kun2; Wang, Yandong4; Yang, Rui3; Hao, Yulin3 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2023-04-01 |
| 卷号 | 227页码:6 |
| 关键词 | Elastic modulus Titanium alloy Elinvar effect Spinodal decomposition Phase stability |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2022.115275 |
| 通讯作者 | Hao, Yulin(ylhao@imr.ac.cn) |
| 英文摘要 | Temperature coefficient of elastic modulus can be positive for metastable13 phase in titanium alloys whereas the precipitation of alpha phase from the13 matrix phase results in a negative coefficient. This abrupt transition inspires us to tune the coefficient from positive, via zero of Elinvar effect, to negative by aging treatment in a Ti-Nb-based alloy. Here reports that its coefficients are continuously tunable by a compositionally-modulated 13+alpha" dual-phase microstructure induced by spinodal decomposition. As the aging time increases at 723 K, the coefficient keeps positive almost unchanged initially, then drops quickly toward zero, and finally decreases slowly of being negative. A mixture rule modeling suggests that the coefficients of both phases decrease gradually from positive of being metastable to negative of being stable. These findings provide a new strategy to achieve Elinvar effect by optimizing the compositionally-modulated microstructure via heat treatments. |
| 资助项目 | NSF of China[51771209] ; NSF of China[51901042] ; CAS[QYZDJ-SSW-JSC031] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000993455900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | NSF of China ; CAS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177949]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Hao, Yulin |
| 作者单位 | 1.Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Peoples R China 2.Univ Sci & Technol Beijing, Inst Solid State Chem, Beijing Adv Innovat Ctr Mat Genome Engn, Dept Phys Chem, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China 5.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Delun,Wang, Haoliang,Wang, Qiushuang,et al. Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy[J]. SCRIPTA MATERIALIA,2023,227:6. |
| APA | Gong, Delun.,Wang, Haoliang.,Wang, Qiushuang.,Li, Shujun.,Lin, Kun.,...&Hao, Yulin.(2023).Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy.SCRIPTA MATERIALIA,227,6. |
| MLA | Gong, Delun,et al."Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy".SCRIPTA MATERIALIA 227(2023):6. |
入库方式： OAI收割
来源：金属研究所
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