Strength–Ductility Synergy of Lightweight High Entropy Alloys
ABSTRACT Lightweight high entropy alloys (LWHEAs) are a unique class of materials that combine numerous principal elements such as Al, Mg, and Ti, in equiatomic or near‐equiatomic ratios. These alloys are suitable for high‐performance applications in the aerospace, automotive, and defense industries...
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| Format: | Article |
| Language: | English |
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Wiley
2025-03-01
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| Series: | Engineering Reports |
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| Online Access: | https://doi.org/10.1002/eng2.70042 |
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| author | Fainah Madewu Nicholus Malatji Mxolisi Brendon Shongwe Tawanda Marazani Lehlogonolo Rudolf Kanyane |
| author_facet | Fainah Madewu Nicholus Malatji Mxolisi Brendon Shongwe Tawanda Marazani Lehlogonolo Rudolf Kanyane |
| author_sort | Fainah Madewu |
| collection | DOAJ |
| description | ABSTRACT Lightweight high entropy alloys (LWHEAs) are a unique class of materials that combine numerous principal elements such as Al, Mg, and Ti, in equiatomic or near‐equiatomic ratios. These alloys are suitable for high‐performance applications in the aerospace, automotive, and defense industries due to their exceptional balance of lightweight, high strength, and superior ductility. The biggest obstacle in the development of LWHEAs is to attain a strength–ductility synergy. The mechanical performance of these alloys is influenced by intricate interactions between solid‐solution strengthening, lattice distortion, and phase stability mechanisms, as well as intricate deformation processes like transformation‐induced plasticity (TRIP) and twinning‐induced plasticity (TWIP). There remains a critical knowledge gap regarding how process parameters and processing methods influence the mechanical properties and microstructure, which are key factors in determining the strength–ductility synergy of LWHEAs. This study evaluated and figured out that the balance between strength and ductility in LWHEAs can be enhanced by optimizing microstructure through customized alloying and heat treatments. Various strategies, including the introduction of coherent precipitates, hierarchical structures, and grain refinement have also demonstrated usefulness in enhancing mechanical performance. The article presented a detailed review of the recent progress in the attainment of strength–ductility synergy in LWHEAs. |
| format | Article |
| id | doaj-art-ec28ca35363a4fa3b6a15961c4e98b4f |
| institution | Kabale University |
| issn | 2577-8196 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Engineering Reports |
| spelling | doaj-art-ec28ca35363a4fa3b6a15961c4e98b4f2025-08-20T03:44:00ZengWileyEngineering Reports2577-81962025-03-0173n/an/a10.1002/eng2.70042Strength–Ductility Synergy of Lightweight High Entropy AlloysFainah Madewu0Nicholus Malatji1Mxolisi Brendon Shongwe2Tawanda Marazani3Lehlogonolo Rudolf Kanyane4Department of Chemical, Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South AfricaDepartment of Chemical, Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South AfricaDepartment of Chemical, Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South AfricaDepartment of Chemical, Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South AfricaDepartment of Chemical, Metallurgical and Materials Engineering Tshwane University of Technology Pretoria South AfricaABSTRACT Lightweight high entropy alloys (LWHEAs) are a unique class of materials that combine numerous principal elements such as Al, Mg, and Ti, in equiatomic or near‐equiatomic ratios. These alloys are suitable for high‐performance applications in the aerospace, automotive, and defense industries due to their exceptional balance of lightweight, high strength, and superior ductility. The biggest obstacle in the development of LWHEAs is to attain a strength–ductility synergy. The mechanical performance of these alloys is influenced by intricate interactions between solid‐solution strengthening, lattice distortion, and phase stability mechanisms, as well as intricate deformation processes like transformation‐induced plasticity (TRIP) and twinning‐induced plasticity (TWIP). There remains a critical knowledge gap regarding how process parameters and processing methods influence the mechanical properties and microstructure, which are key factors in determining the strength–ductility synergy of LWHEAs. This study evaluated and figured out that the balance between strength and ductility in LWHEAs can be enhanced by optimizing microstructure through customized alloying and heat treatments. Various strategies, including the introduction of coherent precipitates, hierarchical structures, and grain refinement have also demonstrated usefulness in enhancing mechanical performance. The article presented a detailed review of the recent progress in the attainment of strength–ductility synergy in LWHEAs.https://doi.org/10.1002/eng2.70042ductilitylightweight high entropy alloysstrengthsynergy |
| spellingShingle | Fainah Madewu Nicholus Malatji Mxolisi Brendon Shongwe Tawanda Marazani Lehlogonolo Rudolf Kanyane Strength–Ductility Synergy of Lightweight High Entropy Alloys Engineering Reports ductility lightweight high entropy alloys strength synergy |
| title | Strength–Ductility Synergy of Lightweight High Entropy Alloys |
| title_full | Strength–Ductility Synergy of Lightweight High Entropy Alloys |
| title_fullStr | Strength–Ductility Synergy of Lightweight High Entropy Alloys |
| title_full_unstemmed | Strength–Ductility Synergy of Lightweight High Entropy Alloys |
| title_short | Strength–Ductility Synergy of Lightweight High Entropy Alloys |
| title_sort | strength ductility synergy of lightweight high entropy alloys |
| topic | ductility lightweight high entropy alloys strength synergy |
| url | https://doi.org/10.1002/eng2.70042 |
| work_keys_str_mv | AT fainahmadewu strengthductilitysynergyoflightweighthighentropyalloys AT nicholusmalatji strengthductilitysynergyoflightweighthighentropyalloys AT mxolisibrendonshongwe strengthductilitysynergyoflightweighthighentropyalloys AT tawandamarazani strengthductilitysynergyoflightweighthighentropyalloys AT lehlogonolorudolfkanyane strengthductilitysynergyoflightweighthighentropyalloys |