New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution
文献类型：期刊论文
| 作者 | Wang, Shao-Ping1,2; Ma, Evan3; Xu, Jian1 |
| 刊名 | INTERMETALLICS
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 107页码:15-23 |
| 关键词 | Medium-entropy alloys Solid solution hardening Refractory metals Tensile properties BCC structure |
| ISSN号 | 0966-9795 |
| DOI | 10.1016/j.intermet.2019.01.004 |
| 通讯作者 | Xu, Jian(jianxu@imr.ac.cn) |
| 英文摘要 | 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. |
| 资助项目 | National Natural Science Foundation of China[51571192] ; JHU by US NSF-DMR[1804320] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000461401900004 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China ; JHU by US NSF-DMR |
| 源URL | [http://ir.imr.ac.cn/handle/321006/132423]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Xu, Jian |
| 作者单位 | 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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：金属研究所
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