Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations
Nanoquasicrystalline Al-Fe-Cr-based alloys composed of sub-micro-sized icosahedral quasicrystalline particles embedded in α-Al matrix have a higher strength at elevated temperature compared with commercial Al alloys. However, further improvement of the microstructural stability is desirable in order...
| Հիմնական հեղինակներ: | , , , |
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| Ձևաչափ: | Journal article |
| Լեզու: | English |
| Հրապարակվել է: |
2009
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| _version_ | 1826304933423480832 |
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| author | Galano, M Audebert, F Stone, I Cantor, B |
| author_facet | Galano, M Audebert, F Stone, I Cantor, B |
| author_sort | Galano, M |
| collection | OXFORD |
| description | Nanoquasicrystalline Al-Fe-Cr-based alloys composed of sub-micro-sized icosahedral quasicrystalline particles embedded in α-Al matrix have a higher strength at elevated temperature compared with commercial Al alloys. However, further improvement of the microstructural stability is desirable in order to maximize the elevated temperature strength. A detailed study of the effect on the microstructure and the phase transformations by the addition of Ti, V, Nb or Ta to a ternary Al93(Fe3Cr2)7 alloy was carried out using heat treatment and microstructural characterization. The addition of the fourth element leads to a refined microstructure and can stabilize the icosahedral topology, delaying the quasicrystalline icosahedral phase decomposition until a higher temperature is reached. The addition of Nb or Ta enabled a greater stabilization effect than the addition of Ti or V, retaining a microstructure similar to the as-spun state after heat treatment between 450 and 550 °C and even retaining icosahedral particles up to 550 °C. The outstanding microstructural stabilization obtained with addition of Nb or Ta leads to very promising applications in the automotive and aeronautic industries. © 2009 Acta Materialia Inc. |
| first_indexed | 2024-03-07T06:25:14Z |
| format | Journal article |
| id | oxford-uuid:f40dde28-671a-4e24-bde5-8a1694e8f649 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:25:14Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:f40dde28-671a-4e24-bde5-8a1694e8f6492022-03-27T12:16:51ZNanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformationsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f40dde28-671a-4e24-bde5-8a1694e8f649EnglishSymplectic Elements at Oxford2009Galano, MAudebert, FStone, ICantor, BNanoquasicrystalline Al-Fe-Cr-based alloys composed of sub-micro-sized icosahedral quasicrystalline particles embedded in α-Al matrix have a higher strength at elevated temperature compared with commercial Al alloys. However, further improvement of the microstructural stability is desirable in order to maximize the elevated temperature strength. A detailed study of the effect on the microstructure and the phase transformations by the addition of Ti, V, Nb or Ta to a ternary Al93(Fe3Cr2)7 alloy was carried out using heat treatment and microstructural characterization. The addition of the fourth element leads to a refined microstructure and can stabilize the icosahedral topology, delaying the quasicrystalline icosahedral phase decomposition until a higher temperature is reached. The addition of Nb or Ta enabled a greater stabilization effect than the addition of Ti or V, retaining a microstructure similar to the as-spun state after heat treatment between 450 and 550 °C and even retaining icosahedral particles up to 550 °C. The outstanding microstructural stabilization obtained with addition of Nb or Ta leads to very promising applications in the automotive and aeronautic industries. © 2009 Acta Materialia Inc. |
| spellingShingle | Galano, M Audebert, F Stone, I Cantor, B Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title | Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title_full | Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title_fullStr | Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title_full_unstemmed | Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title_short | Nanoquasicrystalline Al-Fe-Cr-based alloys. Part I: Phase transformations |
| title_sort | nanoquasicrystalline al fe cr based alloys part i phase transformations |
| work_keys_str_mv | AT galanom nanoquasicrystallinealfecrbasedalloyspartiphasetransformations AT audebertf nanoquasicrystallinealfecrbasedalloyspartiphasetransformations AT stonei nanoquasicrystallinealfecrbasedalloyspartiphasetransformations AT cantorb nanoquasicrystallinealfecrbasedalloyspartiphasetransformations |