| Tuning temperature coefficient of elastic modulus by heat treatment in a compositionally-modulated Ti-Nb-based alloy | |
| Gong, Delun1,2; Wang, Haoliang3; Wang, Qiushuang1,2; Li, Shujun1; Lin, Kun4; Wang, Yandong5; Yang, Rui1; Hao, Yulin1 | |
| Corresponding Author | Hao, Yulin(ylhao@imr.ac.cn) |
| 2023-04-01 | |
| Source Publication | SCRIPTA MATERIALIA
 |
| ISSN | 1359-6462 |
| Volume | 227Pages:6 |
| Abstract | 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. |
| Keyword | Elastic modulus Titanium alloy Elinvar effect Spinodal decomposition Phase stability |
| Funding Organization | NSF of China ; CAS |
| DOI | 10.1016/j.scriptamat.2022.115275 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NSF of China[51771209] ; NSF of China[51901042] ; CAS[QYZDJ-SSW-JSC031] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000993455900001 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/177950 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Hao, Yulin |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Peoples R China 4.Univ Sci & Technol Beijing, Inst Solid State Chem, Beijing Adv Innovat Ctr Mat Genome Engn, Dept Phys Chem, Beijing 100083, Peoples R China 5.Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China |
| Recommended Citation 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. |
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