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- Publisher Website: 10.1016/j.matlet.2020.128097
- Scopus: eid_2-s2.0-85086140261
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Article: Annealing-induced abnormal hardening in nanocrystalline NbMoTaW high-entropy alloy thin films
Title | Annealing-induced abnormal hardening in nanocrystalline NbMoTaW high-entropy alloy thin films |
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Authors | |
Keywords | Grain boundary High-entropy alloy (HEA) Mechanical properties Nanocrystalline Thermal properties Thin film |
Issue Date | 2020 |
Citation | Materials Letters, 2020, v. 275, article no. 128097 How to Cite? |
Abstract | High temperature annealing of high-entropy alloys (HEA) typically results in reduced hardness due to grain coarsening, limiting its potential for applications at elevated temperatures. However, in this work, our nanocrystalline NbMoTaW HEA thin film exhibits enhanced hardness up to ~ 17.1 GPa after isothermal annealing at 800 °C for ~ 6 h (hrs). This phenomenon can be explained mainly by the formation of amorphous intergranular films (AIFs). This work does not only demonstrate a high-performance HEA film for potential high-temperature applications, but also provides a practical approach to tailor mechanical properties of nanostructured HEAs. |
Persistent Identifier | http://hdl.handle.net/10722/326220 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.602 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Feng, Xiaobin | - |
dc.contributor.author | Utama Surjadi, James | - |
dc.contributor.author | Lu, Yang | - |
dc.date.accessioned | 2023-03-09T09:58:59Z | - |
dc.date.available | 2023-03-09T09:58:59Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Materials Letters, 2020, v. 275, article no. 128097 | - |
dc.identifier.issn | 0167-577X | - |
dc.identifier.uri | http://hdl.handle.net/10722/326220 | - |
dc.description.abstract | High temperature annealing of high-entropy alloys (HEA) typically results in reduced hardness due to grain coarsening, limiting its potential for applications at elevated temperatures. However, in this work, our nanocrystalline NbMoTaW HEA thin film exhibits enhanced hardness up to ~ 17.1 GPa after isothermal annealing at 800 °C for ~ 6 h (hrs). This phenomenon can be explained mainly by the formation of amorphous intergranular films (AIFs). This work does not only demonstrate a high-performance HEA film for potential high-temperature applications, but also provides a practical approach to tailor mechanical properties of nanostructured HEAs. | - |
dc.language | eng | - |
dc.relation.ispartof | Materials Letters | - |
dc.subject | Grain boundary | - |
dc.subject | High-entropy alloy (HEA) | - |
dc.subject | Mechanical properties | - |
dc.subject | Nanocrystalline | - |
dc.subject | Thermal properties | - |
dc.subject | Thin film | - |
dc.title | Annealing-induced abnormal hardening in nanocrystalline NbMoTaW high-entropy alloy thin films | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.matlet.2020.128097 | - |
dc.identifier.scopus | eid_2-s2.0-85086140261 | - |
dc.identifier.volume | 275 | - |
dc.identifier.spage | article no. 128097 | - |
dc.identifier.epage | article no. 128097 | - |
dc.identifier.eissn | 1873-4979 | - |
dc.identifier.isi | WOS:000548646700013 | - |