Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process
Multi-material designs (MMD) are more frequently used in the automotive industry. Hereby, the combination of different materials, metal sheets, or cast components, is mechanically joined, often by forming joining processes. The cast components mostly used are high-strength, age-hardenable aluminium...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Journal of Manufacturing and Materials Processing |
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| Online Access: | https://www.mdpi.com/2504-4494/7/4/132 |
| _version_ | 1827729507271835648 |
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| author | Moritz Neuser Mirko Schaper Olexandr Grydin |
| author_facet | Moritz Neuser Mirko Schaper Olexandr Grydin |
| author_sort | Moritz Neuser |
| collection | DOAJ |
| description | Multi-material designs (MMD) are more frequently used in the automotive industry. Hereby, the combination of different materials, metal sheets, or cast components, is mechanically joined, often by forming joining processes. The cast components mostly used are high-strength, age-hardenable aluminium alloys of the Al–Si system. Here, the low ductility of the AlSi alloys constitutes a challenge because their brittle nature causes cracks during the joining process. However, by using suitable solidification conditions, it is possible to achieve a microstructure with improved mechanical and joining properties. For this study, we used the twin-roll casting process (TRC) with water-cooled rollers to manufacture the hypoeutectic AlSi10Mg for the first time. Hereby, high solidification rates are realisable, which introduces a microstructure that is about four times finer than in the sand casting process. In particular, it is shown that a fine microstructure close to the modification with Na or Sr is achieved by the high solidification rate in the TRC process without using these elements. Based on this, the mechanical properties increase, and especially the ductility is enhanced. Subsequent joining investigations validate the positive influence of a high solidification rate since cracks in joints can be avoided. Finally, a microstructure-property-joint suitability correlation is presented. |
| first_indexed | 2024-03-10T23:49:45Z |
| format | Article |
| id | doaj.art-ae100c3f44094a379219c9c2f97f84d9 |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-10T23:49:45Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-ae100c3f44094a379219c9c2f97f84d92023-11-19T01:44:14ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942023-07-017413210.3390/jmmp7040132Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting ProcessMoritz Neuser0Mirko Schaper1Olexandr Grydin2Department of Mechanical Engineering (LWK), Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyDepartment of Mechanical Engineering (LWK), Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyDepartment of Materials Science, Paderborn University, Warburger Straße 100, 33098 Paderborn, GermanyMulti-material designs (MMD) are more frequently used in the automotive industry. Hereby, the combination of different materials, metal sheets, or cast components, is mechanically joined, often by forming joining processes. The cast components mostly used are high-strength, age-hardenable aluminium alloys of the Al–Si system. Here, the low ductility of the AlSi alloys constitutes a challenge because their brittle nature causes cracks during the joining process. However, by using suitable solidification conditions, it is possible to achieve a microstructure with improved mechanical and joining properties. For this study, we used the twin-roll casting process (TRC) with water-cooled rollers to manufacture the hypoeutectic AlSi10Mg for the first time. Hereby, high solidification rates are realisable, which introduces a microstructure that is about four times finer than in the sand casting process. In particular, it is shown that a fine microstructure close to the modification with Na or Sr is achieved by the high solidification rate in the TRC process without using these elements. Based on this, the mechanical properties increase, and especially the ductility is enhanced. Subsequent joining investigations validate the positive influence of a high solidification rate since cracks in joints can be avoided. Finally, a microstructure-property-joint suitability correlation is presented.https://www.mdpi.com/2504-4494/7/4/132twin-roll castingaluminium casting alloymodified microstructuremechanical propertiesAlSi10Mgmechanical joinability |
| spellingShingle | Moritz Neuser Mirko Schaper Olexandr Grydin Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process Journal of Manufacturing and Materials Processing twin-roll casting aluminium casting alloy modified microstructure mechanical properties AlSi10Mg mechanical joinability |
| title | Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process |
| title_full | Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process |
| title_fullStr | Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process |
| title_full_unstemmed | Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process |
| title_short | Mechanical and Microstructure Characterisation of the Hypoeutectic Cast Aluminium Alloy AlSi10Mg Manufactured by the Twin-Roll Casting Process |
| title_sort | mechanical and microstructure characterisation of the hypoeutectic cast aluminium alloy alsi10mg manufactured by the twin roll casting process |
| topic | twin-roll casting aluminium casting alloy modified microstructure mechanical properties AlSi10Mg mechanical joinability |
| url | https://www.mdpi.com/2504-4494/7/4/132 |
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