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- Publisher Website: 10.1016/j.mattod.2021.02.022
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Article: Local chemical fluctuation mediated ductility in body-centered-cubic high-entropy alloys
Title | Local chemical fluctuation mediated ductility in body-centered-cubic high-entropy alloys |
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Authors | |
Issue Date | 2021 |
Citation | Materials Today, 2021, v. 46, p. 28-34 How to Cite? |
Abstract | High-entropy alloys (HEAs) open up a new horizon for discovering un-explored mechanical properties and deformation mechanisms. Local chemical fluctuations (LCFs) in HEAs were found to have significant influences on their mechanical performance, however, the underlying origins remain unclear. In this work, direct dynamic observation of the interaction between LCFs and dislocations was captured by in situ transmission electron microscopy in a ductile body-centered-cubic (BCC) HfNbTiZr HEA under loading. The observed dislocation pinning induced by LCFs contributes to the increment not only in the strength but also in the ductility due to strongly promoted dislocation interaction. The observed local double cross-slips caused by the LCFs distribute dislocations onto various atomic planes homogenously, which is also beneficial for ductilization in HfNbTiZr. Our findings not only shed light on the understanding of deformation mechanisms of HEAs, but also provide a new perspective to design ductile BCC HEAs. |
Persistent Identifier | http://hdl.handle.net/10722/326278 |
ISSN | 2023 Impact Factor: 21.1 2023 SCImago Journal Rankings: 5.949 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Bu, Yeqiang | - |
dc.contributor.author | Wu, Yuan | - |
dc.contributor.author | Lei, Zhifeng | - |
dc.contributor.author | Yuan, Xiaoyuan | - |
dc.contributor.author | Wu, Honghui | - |
dc.contributor.author | Feng, Xiaobin | - |
dc.contributor.author | Liu, Jiabin | - |
dc.contributor.author | Ding, Jun | - |
dc.contributor.author | Lu, Yang | - |
dc.contributor.author | Wang, Hongtao | - |
dc.contributor.author | Lu, Zhaoping | - |
dc.contributor.author | Yang, Wei | - |
dc.date.accessioned | 2023-03-09T09:59:26Z | - |
dc.date.available | 2023-03-09T09:59:26Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Materials Today, 2021, v. 46, p. 28-34 | - |
dc.identifier.issn | 1369-7021 | - |
dc.identifier.uri | http://hdl.handle.net/10722/326278 | - |
dc.description.abstract | High-entropy alloys (HEAs) open up a new horizon for discovering un-explored mechanical properties and deformation mechanisms. Local chemical fluctuations (LCFs) in HEAs were found to have significant influences on their mechanical performance, however, the underlying origins remain unclear. In this work, direct dynamic observation of the interaction between LCFs and dislocations was captured by in situ transmission electron microscopy in a ductile body-centered-cubic (BCC) HfNbTiZr HEA under loading. The observed dislocation pinning induced by LCFs contributes to the increment not only in the strength but also in the ductility due to strongly promoted dislocation interaction. The observed local double cross-slips caused by the LCFs distribute dislocations onto various atomic planes homogenously, which is also beneficial for ductilization in HfNbTiZr. Our findings not only shed light on the understanding of deformation mechanisms of HEAs, but also provide a new perspective to design ductile BCC HEAs. | - |
dc.language | eng | - |
dc.relation.ispartof | Materials Today | - |
dc.title | Local chemical fluctuation mediated ductility in body-centered-cubic high-entropy alloys | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.mattod.2021.02.022 | - |
dc.identifier.scopus | eid_2-s2.0-85103987413 | - |
dc.identifier.volume | 46 | - |
dc.identifier.spage | 28 | - |
dc.identifier.epage | 34 | - |
dc.identifier.eissn | 1873-4103 | - |
dc.identifier.isi | WOS:000661361700007 | - |