Hydrogen induced slowdown of spallation in high entropy alloy under shock loading
Hydrogen embrittlement is ubiquitous in metals and alloys exposed to hydrogen, which has been extensively studied over a century. In contrast to traditional alloys, mechanisms of hydrogen embrittlement under shock loading are poorly understood, especially in recently emerging multi-principle element...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
2021
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| Online Access: | http://hdl.handle.net/20.500.11937/83416 |
| _version_ | 1848764583381041152 |
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| author | Xie, Z.C. Li, C. Wang, H.Y. Lu, Chunsheng Dai, L.H. |
| author_facet | Xie, Z.C. Li, C. Wang, H.Y. Lu, Chunsheng Dai, L.H. |
| author_sort | Xie, Z.C. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Hydrogen embrittlement is ubiquitous in metals and alloys exposed to hydrogen, which has been extensively studied over a century. In contrast to traditional alloys, mechanisms of hydrogen embrittlement under shock loading are poorly understood, especially in recently emerging multi-principle element and chemically disordered high entropy alloys (HEAs). By using a specially designed double-target technique, an unexpected phenomenon of hydrogen-retarded spallation was observed in CrMnFeCoNi HEA under plate impact loading. To reveal the underlying mechanism, a trans-scale statistical damage mechanics model was developed based on microstructural characterization and first principles calculations. The hydrogen-retarded nucleation of micro-voids is attributed to hydrogen-vacancy complexes with high migration energy, while formation of nano-twins with high resistance reduces their growth rate. These results shed light on the better understanding of hydrogen embrittlement in chemically complex HEAs. |
| first_indexed | 2025-11-14T11:21:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-83416 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:21:40Z |
| publishDate | 2021 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-834162021-06-22T02:50:48Z Hydrogen induced slowdown of spallation in high entropy alloy under shock loading Xie, Z.C. Li, C. Wang, H.Y. Lu, Chunsheng Dai, L.H. Hydrogen embrittlement is ubiquitous in metals and alloys exposed to hydrogen, which has been extensively studied over a century. In contrast to traditional alloys, mechanisms of hydrogen embrittlement under shock loading are poorly understood, especially in recently emerging multi-principle element and chemically disordered high entropy alloys (HEAs). By using a specially designed double-target technique, an unexpected phenomenon of hydrogen-retarded spallation was observed in CrMnFeCoNi HEA under plate impact loading. To reveal the underlying mechanism, a trans-scale statistical damage mechanics model was developed based on microstructural characterization and first principles calculations. The hydrogen-retarded nucleation of micro-voids is attributed to hydrogen-vacancy complexes with high migration energy, while formation of nano-twins with high resistance reduces their growth rate. These results shed light on the better understanding of hydrogen embrittlement in chemically complex HEAs. 2021 Journal Article http://hdl.handle.net/20.500.11937/83416 10.1016/j.ijplas.2021.102944 restricted |
| spellingShingle | Xie, Z.C. Li, C. Wang, H.Y. Lu, Chunsheng Dai, L.H. Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title | Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title_full | Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title_fullStr | Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title_full_unstemmed | Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title_short | Hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| title_sort | hydrogen induced slowdown of spallation in high entropy alloy under shock loading |
| url | http://hdl.handle.net/20.500.11937/83416 |