Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel
Abstract The usage of high-strength materials in hydrogen-containing atmospheres is a particular challenge. High-strength copper alloys, which have not been extensively studied, may offer significant potential. In this study, the hydrogen solubility, diffusivity, and embrittlement of two high-streng...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | npj Materials Degradation |
| Online Access: | https://doi.org/10.1038/s41529-025-00608-4 |
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| author | David Kniep Mario Rudolphi Klaus Ohla Andreas Frehn Mathias Christian Galetz |
| author_facet | David Kniep Mario Rudolphi Klaus Ohla Andreas Frehn Mathias Christian Galetz |
| author_sort | David Kniep |
| collection | DOAJ |
| description | Abstract The usage of high-strength materials in hydrogen-containing atmospheres is a particular challenge. High-strength copper alloys, which have not been extensively studied, may offer significant potential. In this study, the hydrogen solubility, diffusivity, and embrittlement of two high-strength copper-based alloys, Alloy 25 HT and PerforMet AT, are investigated compared to austenitic stainless steel 316 L. Across all charging conditions, the steel 316 L absorbed multiple orders of magnitude more hydrogen than the copper alloys. Permeation tests reveal effective diffusion coefficients of 1.7 × 10− 13 m²/s for Alloy 25 HT and 3.0 × 10−14 m²/s for PerforMet AT at 60 °C, respectively. Results of charged tensile specimens in slow strain rate tests indicated a negligible reduction of strain for Alloy 25 HT and a minor reduction to 83.5% of the strain of the uncharged PerforMet AT, suggesting a low susceptibility to hydrogen embrittlement under these tested conditions. |
| format | Article |
| id | doaj-art-d92bc51570aa406481ea3e1375c97c3c |
| institution | Kabale University |
| issn | 2397-2106 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Materials Degradation |
| spelling | doaj-art-d92bc51570aa406481ea3e1375c97c3c2025-08-20T03:48:18ZengNature Portfolionpj Materials Degradation2397-21062025-05-019111010.1038/s41529-025-00608-4Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steelDavid Kniep0Mario Rudolphi1Klaus Ohla2Andreas Frehn3Mathias Christian Galetz4DECHEMA-ForschungsinstitutDECHEMA-ForschungsinstitutRetired, formerly Materion Brush GmbHMaterion Brush GmbHDECHEMA-ForschungsinstitutAbstract The usage of high-strength materials in hydrogen-containing atmospheres is a particular challenge. High-strength copper alloys, which have not been extensively studied, may offer significant potential. In this study, the hydrogen solubility, diffusivity, and embrittlement of two high-strength copper-based alloys, Alloy 25 HT and PerforMet AT, are investigated compared to austenitic stainless steel 316 L. Across all charging conditions, the steel 316 L absorbed multiple orders of magnitude more hydrogen than the copper alloys. Permeation tests reveal effective diffusion coefficients of 1.7 × 10− 13 m²/s for Alloy 25 HT and 3.0 × 10−14 m²/s for PerforMet AT at 60 °C, respectively. Results of charged tensile specimens in slow strain rate tests indicated a negligible reduction of strain for Alloy 25 HT and a minor reduction to 83.5% of the strain of the uncharged PerforMet AT, suggesting a low susceptibility to hydrogen embrittlement under these tested conditions.https://doi.org/10.1038/s41529-025-00608-4 |
| spellingShingle | David Kniep Mario Rudolphi Klaus Ohla Andreas Frehn Mathias Christian Galetz Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel npj Materials Degradation |
| title | Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel |
| title_full | Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel |
| title_fullStr | Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel |
| title_full_unstemmed | Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel |
| title_short | Hydrogen diffusivity, solubility, and embrittlement of high-strength copper alloys in comparison to stainless steel |
| title_sort | hydrogen diffusivity solubility and embrittlement of high strength copper alloys in comparison to stainless steel |
| url | https://doi.org/10.1038/s41529-025-00608-4 |
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