Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures
We use a multi-heterostructure strategy to mitigate temperature-induced brittleness and strain-softening in precipitation-strengthened high-entropy alloys (PSHEAs). A PSHEA consisting of four types of heterostructures, including deformed/recrystallization grains bands inside with irregularly-shaped/...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-04-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2025.2465803 |
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| author | J.X. Zhu Shiwei Wu C. Ren Yuefei Jia B.X. Cao J.L. Ren T. Yang P.K. Liaw G. Wang |
| author_facet | J.X. Zhu Shiwei Wu C. Ren Yuefei Jia B.X. Cao J.L. Ren T. Yang P.K. Liaw G. Wang |
| author_sort | J.X. Zhu |
| collection | DOAJ |
| description | We use a multi-heterostructure strategy to mitigate temperature-induced brittleness and strain-softening in precipitation-strengthened high-entropy alloys (PSHEAs). A PSHEA consisting of four types of heterostructures, including deformed/recrystallization grains bands inside with irregularly-shaped/spheroidal coherent precipitates, and smooth/serrated grain and precipitate-matrix interfaces, is successfully synthesized. The resultant PSHEA exhibits significantly-enhanced strength and uniform elongation simultaneously at −196–700 °C. This overcoming of the strength-ductility trade-off is attributed to a synergistic hetero-deformation-induced strengthening effect, and a two-level strain-delocalization toughening effect. Our findings offer a promising pathway to develop ultra-strong, ductile, and strain-hardenable PSHEAs and superalloys in a wide temperature range. |
| format | Article |
| id | doaj-art-788caf1ef7a446a2b08a32b3d76bebc9 |
| institution | DOAJ |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-788caf1ef7a446a2b08a32b3d76bebc92025-08-20T03:05:27ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-04-0113441141910.1080/21663831.2025.2465803Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperaturesJ.X. Zhu0Shiwei Wu1C. Ren2Yuefei Jia3B.X. Cao4J.L. Ren5T. Yang6P.K. Liaw7G. Wang8Institute of Materials, Shanghai University, Shanghai, People’s Republic of ChinaDepartment of Materials·Science and Engineering, City·University·of Hong Kong, Hong Kong, People’s Republic of ChinaInstitute of Materials, Shanghai University, Shanghai, People’s Republic of ChinaInstitute of Materials, Shanghai University, Shanghai, People’s Republic of ChinaSchool·of Materials Science and Engineering, Harbin Institute·of Technology (Shenzhen), Shenzhen, People’s Republic of ChinaSchool of Mathematics·and Statistics, Zhengzhou University, Zhengzhou, People’s Republic of ChinaDepartment of Materials·Science and Engineering, City·University·of Hong Kong, Hong Kong, People’s Republic of ChinaDepartment of Materials Science and Engineering,·The University·of Tennessee, Knoxville, USAInstitute of Materials, Shanghai University, Shanghai, People’s Republic of ChinaWe use a multi-heterostructure strategy to mitigate temperature-induced brittleness and strain-softening in precipitation-strengthened high-entropy alloys (PSHEAs). A PSHEA consisting of four types of heterostructures, including deformed/recrystallization grains bands inside with irregularly-shaped/spheroidal coherent precipitates, and smooth/serrated grain and precipitate-matrix interfaces, is successfully synthesized. The resultant PSHEA exhibits significantly-enhanced strength and uniform elongation simultaneously at −196–700 °C. This overcoming of the strength-ductility trade-off is attributed to a synergistic hetero-deformation-induced strengthening effect, and a two-level strain-delocalization toughening effect. Our findings offer a promising pathway to develop ultra-strong, ductile, and strain-hardenable PSHEAs and superalloys in a wide temperature range.https://www.tandfonline.com/doi/10.1080/21663831.2025.2465803Precipitation-strengthened high-entropy alloymulti-heterostructurestrength-ductility trade-offuniform ductilitywide temperature range |
| spellingShingle | J.X. Zhu Shiwei Wu C. Ren Yuefei Jia B.X. Cao J.L. Ren T. Yang P.K. Liaw G. Wang Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures Materials Research Letters Precipitation-strengthened high-entropy alloy multi-heterostructure strength-ductility trade-off uniform ductility wide temperature range |
| title | Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures |
| title_full | Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures |
| title_fullStr | Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures |
| title_full_unstemmed | Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures |
| title_short | Quad-heterostructure precipitation-strengthened high-entropy alloy overcomes strength-ductility trade-off from cryogenic to intermediate temperatures |
| title_sort | quad heterostructure precipitation strengthened high entropy alloy overcomes strength ductility trade off from cryogenic to intermediate temperatures |
| topic | Precipitation-strengthened high-entropy alloy multi-heterostructure strength-ductility trade-off uniform ductility wide temperature range |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2025.2465803 |
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