Radiation response of multicomponent L12 γ′ precipitates strengthened high entropy alloys: The role of γ/γ′ interface
The advancement of high entropy alloys (HEAs) has stimulated the development of multicomponent L12 γ′ intermetallics, which exhibit both excellent strength and ductility. These intermetallics with long-range order are typically employed as coherent precipitates to enhance the high-temperature perfor...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424027777 |
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| Summary: | The advancement of high entropy alloys (HEAs) has stimulated the development of multicomponent L12 γ′ intermetallics, which exhibit both excellent strength and ductility. These intermetallics with long-range order are typically employed as coherent precipitates to enhance the high-temperature performance of HEAs. This study investigates the influence of multicomponent γ′ intermetallics on the irradiation response of the strengthened HEA γ phase, focusing on the role of the multicomponent γ/γ′ interface in defect production and evolution. Our results indicate that the chemical disorder within the multicomponent γ′ phase leads to a broad defect energy spectrum near the interface zone, diminishing its effectiveness as a defect sink. Based on these observations, we propose that, distinct from traditional superalloys, the γ/γ′ interface plays a minor role in the irradiation resilience of multicomponent γ′ intermetallics-strengthened HEAs. Instead, the inherent chemical disorder within the multicomponent γ′ intermetallics emerges as the key factor. |
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| ISSN: | 2238-7854 |