Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy
This paper investigates the transformation of Mg-Si precipitates formed at an interface of an Al-Mg-Si alloy joint, welded by the high strain-rate collision during magnetic pulse impact welding. The Transmission Electron Microscopy (TEM) and Energy dispersive X-Ray (EDX) analysis of the precipitates...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of Alloys and Metallurgical Systems |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949917823000482 |
| _version_ | 1797341888153387008 |
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| author | R.N. Raoelison T. Sapanathan J.S. Li Z. Zhang D. Racine X.-G. Chen D. Marceau M. Rachik |
| author_facet | R.N. Raoelison T. Sapanathan J.S. Li Z. Zhang D. Racine X.-G. Chen D. Marceau M. Rachik |
| author_sort | R.N. Raoelison |
| collection | DOAJ |
| description | This paper investigates the transformation of Mg-Si precipitates formed at an interface of an Al-Mg-Si alloy joint, welded by the high strain-rate collision during magnetic pulse impact welding. The Transmission Electron Microscopy (TEM) and Energy dispersive X-Ray (EDX) analysis of the precipitates reveal a nucleation of circular shape AlFeMnSiCr precipitate (size of ∼100 nm) from the dissolution of the native β″ (needle-shaped) precipitate. The AlFeMnSiCr phase can also reach a size up to several microns and grows into diverse shapes (rod-shaped, polygonal-shaped, ovoid-shaped). Based on the microstructural characterizations and on observations available in the literature including relevant data of Lodgaard and Ryum, the transformation sequence due to the high-speed collision can be described as follows: β″-Mg-Si (needle-shaped) → β’-Mg2Si (rod-shaped) ‘u-phase’ → Al(MnCrFe)Si (round-shaped) → Al(MnCrFe)Si +(+: Cr; Cu and/or Ni, rod-shaped, polygonal-shaped, ovoid-shaped). The comparison of samples welded at three different impact conditions (low impact intensity, intermediate impact intensity, high impact intensity) shows that the area fraction of the precipitates decreases with the increase of the impact intensity. The identification of the crystal structure of these different precipitates, from the nucleation to the final complete formation of the precipitation, can further enrich the transformation sequence in this paper. The role of the high strain kinematics on the deformation of the Al lattice and on the diffusion rate of alloying elements is also a perspective that can further explain this new observation of precipitation during magnetic pulse welding. |
| first_indexed | 2024-03-08T10:25:29Z |
| format | Article |
| id | doaj.art-3a955dfc76da49e5ab6f9814a74e53d1 |
| institution | Directory Open Access Journal |
| issn | 2949-9178 |
| language | English |
| last_indexed | 2024-03-08T10:25:29Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Alloys and Metallurgical Systems |
| spelling | doaj.art-3a955dfc76da49e5ab6f9814a74e53d12024-01-27T07:14:41ZengElsevierJournal of Alloys and Metallurgical Systems2949-91782023-12-014100048Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloyR.N. Raoelison0T. Sapanathan1J.S. Li2Z. Zhang3D. Racine4X.-G. Chen5D. Marceau6M. Rachik7Université de Technologie de Belfort-Montbéliard, CNRS, ICB, Belfort cedex F-90010, France; Corresponding author.Curtin Corrosion Centre, WA School of Mines: Minerals, Energy and Chemical Engineering, Faculty of Science and Engineering, Curtin University, Perth, WA 6102, AustraliaSorbonne universités, Université de technologie de Compiègne, laboratoire Roberval, FRE 2012 CNRS, Centre de recherche Royallieu, CS 60319, Compiègne cedex 60203, FranceCURAL-REGAL, Université du Québec à Chicoutimi, Saguenay, QC, CanadaCURAL-REGAL, Université du Québec à Chicoutimi, Saguenay, QC, CanadaCURAL-REGAL, Université du Québec à Chicoutimi, Saguenay, QC, CanadaCURAL-REGAL, Université du Québec à Chicoutimi, Saguenay, QC, CanadaSorbonne universités, Université de technologie de Compiègne, laboratoire Roberval, FRE 2012 CNRS, Centre de recherche Royallieu, CS 60319, Compiègne cedex 60203, FranceThis paper investigates the transformation of Mg-Si precipitates formed at an interface of an Al-Mg-Si alloy joint, welded by the high strain-rate collision during magnetic pulse impact welding. The Transmission Electron Microscopy (TEM) and Energy dispersive X-Ray (EDX) analysis of the precipitates reveal a nucleation of circular shape AlFeMnSiCr precipitate (size of ∼100 nm) from the dissolution of the native β″ (needle-shaped) precipitate. The AlFeMnSiCr phase can also reach a size up to several microns and grows into diverse shapes (rod-shaped, polygonal-shaped, ovoid-shaped). Based on the microstructural characterizations and on observations available in the literature including relevant data of Lodgaard and Ryum, the transformation sequence due to the high-speed collision can be described as follows: β″-Mg-Si (needle-shaped) → β’-Mg2Si (rod-shaped) ‘u-phase’ → Al(MnCrFe)Si (round-shaped) → Al(MnCrFe)Si +(+: Cr; Cu and/or Ni, rod-shaped, polygonal-shaped, ovoid-shaped). The comparison of samples welded at three different impact conditions (low impact intensity, intermediate impact intensity, high impact intensity) shows that the area fraction of the precipitates decreases with the increase of the impact intensity. The identification of the crystal structure of these different precipitates, from the nucleation to the final complete formation of the precipitation, can further enrich the transformation sequence in this paper. The role of the high strain kinematics on the deformation of the Al lattice and on the diffusion rate of alloying elements is also a perspective that can further explain this new observation of precipitation during magnetic pulse welding.http://www.sciencedirect.com/science/article/pii/S2949917823000482High speed collisionImpact weldingDynamic recrystallizationPrecipitation sequenceDispersoids |
| spellingShingle | R.N. Raoelison T. Sapanathan J.S. Li Z. Zhang D. Racine X.-G. Chen D. Marceau M. Rachik Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy Journal of Alloys and Metallurgical Systems High speed collision Impact welding Dynamic recrystallization Precipitation sequence Dispersoids |
| title | Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy |
| title_full | Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy |
| title_fullStr | Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy |
| title_full_unstemmed | Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy |
| title_short | Transformation sequence of Mg-Si precipitates towards a precipitation of Mn and Cr containing phase governed by the high strain-rate collision during magnetic pulse welding of Al-Mg-Si alloy |
| title_sort | transformation sequence of mg si precipitates towards a precipitation of mn and cr containing phase governed by the high strain rate collision during magnetic pulse welding of al mg si alloy |
| topic | High speed collision Impact welding Dynamic recrystallization Precipitation sequence Dispersoids |
| url | http://www.sciencedirect.com/science/article/pii/S2949917823000482 |
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