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New ternary equi-atomic refractory medium-entropy alloys with tensile ductility: Hafnium versus titanium into NbTa-based solution
Wang, Shao-Ping; Ma, Evan; Xu, Jian
2019-04-01
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume107Pages:15-23
AbstractWe 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.
KeywordMedium-entropy alloys Solid solution hardening Refractory metals Tensile properties BCC structure
Indexed BySCI
Language英语
WOS IDWOS:000461401900004
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81230
Collection中国科学院金属研究所
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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