Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength
Stable L12 structured Cr3Cu precipitates were determined in a Cu-4.06Cr-1.25Nb alloy rather than b.c.c. structured Cr precipitates by transmission electron microscope (TEM) and three-dimension atom probe tomography (3DAP) at 450 oC. The precipitation sequence of the studied alloy aged at 400 oC was...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-04-01
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| Series: | Materials Research Letters |
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| Online Access: | http://dx.doi.org/10.1080/21663831.2022.2035838 |
| _version_ | 1828882562113601536 |
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| author | Y. H. Yang Q. Lei P. Zhang W. Y. Wang X. K. Zhang Y. P. Li K. C. Zhou Z. Li |
| author_facet | Y. H. Yang Q. Lei P. Zhang W. Y. Wang X. K. Zhang Y. P. Li K. C. Zhou Z. Li |
| author_sort | Y. H. Yang |
| collection | DOAJ |
| description | Stable L12 structured Cr3Cu precipitates were determined in a Cu-4.06Cr-1.25Nb alloy rather than b.c.c. structured Cr precipitates by transmission electron microscope (TEM) and three-dimension atom probe tomography (3DAP) at 450 oC. The precipitation sequence of the studied alloy aged at 400 oC was supersaturated solid solution → f.c.c. Cr phase → Cr3Cu phase (L12). Nb atoms would segregate in the interface between the Cu and Cr phase, reduce the Cu/Cr interfacial energy, affect the precipitation, growth, phase transformation, and coarsening of the precipitate. These Cr3Cu precipitates significantly improved the high-temperature strength of the Cu-Cr-Nb alloy (223 ± 5 MPa at 500 oC). |
| first_indexed | 2024-12-13T10:30:45Z |
| format | Article |
| id | doaj.art-e1e37a6eb1bc4167b66120843757fc90 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-13T10:30:45Z |
| publishDate | 2022-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-e1e37a6eb1bc4167b66120843757fc902022-12-21T23:50:52ZengTaylor & Francis GroupMaterials Research Letters2166-38312022-04-0110425726310.1080/21663831.2022.20358382035838Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strengthY. H. Yang0Q. Lei1P. Zhang2W. Y. Wang3X. K. Zhang4Y. P. Li5K. C. Zhou6Z. Li7Central South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityCentral South UniversityStable L12 structured Cr3Cu precipitates were determined in a Cu-4.06Cr-1.25Nb alloy rather than b.c.c. structured Cr precipitates by transmission electron microscope (TEM) and three-dimension atom probe tomography (3DAP) at 450 oC. The precipitation sequence of the studied alloy aged at 400 oC was supersaturated solid solution → f.c.c. Cr phase → Cr3Cu phase (L12). Nb atoms would segregate in the interface between the Cu and Cr phase, reduce the Cu/Cr interfacial energy, affect the precipitation, growth, phase transformation, and coarsening of the precipitate. These Cr3Cu precipitates significantly improved the high-temperature strength of the Cu-Cr-Nb alloy (223 ± 5 MPa at 500 oC).http://dx.doi.org/10.1080/21663831.2022.2035838copper alloysprecipitationcoarseningfirst-principles calculation |
| spellingShingle | Y. H. Yang Q. Lei P. Zhang W. Y. Wang X. K. Zhang Y. P. Li K. C. Zhou Z. Li Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength Materials Research Letters copper alloys precipitation coarsening first-principles calculation |
| title | Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength |
| title_full | Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength |
| title_fullStr | Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength |
| title_full_unstemmed | Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength |
| title_short | Stabilization of L12 structured Cr3Cu precipitates in a Cu-4.06Cr-1.25Nb alloy with high high-temperature strength |
| title_sort | stabilization of l12 structured cr3cu precipitates in a cu 4 06cr 1 25nb alloy with high high temperature strength |
| topic | copper alloys precipitation coarsening first-principles calculation |
| url | http://dx.doi.org/10.1080/21663831.2022.2035838 |
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