| New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution | |
| Wang, Shao-Ping1,2; Ma, Evan3; Xu, Jian1 | |
| Corresponding Author | Xu, Jian(jianxu@imr.ac.cn) |
| 2019-04-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 107Pages:15-23 |
| Abstract | We demonstrate that based on NbTa as the base solution, ternary equiatomic HfNbTa and TiNbTa single-phase body-centered-cubic (BCC) solid solutions are achieved at arc-melted alloy ingots. These add interesting new members into the group of ternary refractory medium-entropy alloys (RMEAs), previously available only in NbTiZr. Moreover, HfNbTa and TiNbTa are the first two ternary RMEAs that exhibit tensile ductility, with HfNbTa having a combination of yield strength and tensile strain on par with its high-entropy counterpart, the Senkov alloy TiZrHfNbTa. We also show that alloying Hf into the base NbTa solution manifests a much higher strengthening potency compared with Ti. This difference can be rationalized using empirical parameters and models accounting for the size and modulus misfits among constituent elements. |
| Keyword | Medium-entropy alloys Solid solution hardening Refractory metals Tensile properties BCC structure |
| Funding Organization | National Natural Science Foundation of China ; JHU by US NSF-DMR |
| DOI | 10.1016/j.intermet.2019.01.004 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51571192] ; JHU by US NSF-DMR[1804320] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000461401900004 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132424 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xu, Jian |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China 3.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA |
| Recommended Citation GB/T 7714 | Wang, Shao-Ping,Ma, Evan,Xu, Jian. New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution[J]. INTERMETALLICS,2019,107:15-23. |
| APA | Wang, Shao-Ping,Ma, Evan,&Xu, Jian.(2019).New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution.INTERMETALLICS,107,15-23. |
| MLA | Wang, Shao-Ping,et al."New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution".INTERMETALLICS 107(2019):15-23. |
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