Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy
Implementing the concept of mixed construction in modern automotive engineering requires the joining of sheet metal or extruded profiles with cast components made from different materials. As weight reduction is desired, these cast components are usually made from high-strength aluminium alloys of t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/8/1304 |
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| author | Moritz Neuser Olexandr Grydin Anatolii Andreiev Mirko Schaper |
| author_facet | Moritz Neuser Olexandr Grydin Anatolii Andreiev Mirko Schaper |
| author_sort | Moritz Neuser |
| collection | DOAJ |
| description | Implementing the concept of mixed construction in modern automotive engineering requires the joining of sheet metal or extruded profiles with cast components made from different materials. As weight reduction is desired, these cast components are usually made from high-strength aluminium alloys of the Al-Si (Mn, Mg) system, which have limited weldability. The mechanical joinability of the cast components depends on their ductility, which is influenced by the microstructure. High-strength cast aluminium alloys have relatively low ductility, which leads to cracking of the joints. This limits the range of applications for cast aluminium alloys. In this study, an aluminium alloy of the Al-Si system AlSi9 is used to investigate relationships between solidification conditions during the sand casting process, microstructure, mechanical properties, and joinability. The demonstrator is a stepped plate with a minimum thickness of 2.0 mm and a maximum thickness of 4.0 mm, whereas the thickness difference between neighbour steps amounts to 0.5 mm. During casting trials, the solidification rates for different plate steps were measured. The microscopic investigations reveal a correlation between solidification rates and microstructure parameters such as secondary dendrite arm spacing. Furthermore, mechanical properties and the mechanical joinability are investigated. |
| first_indexed | 2024-03-10T08:35:22Z |
| format | Article |
| id | doaj.art-9cf0e140d6ae47a59cb3fcb6ee33da6e |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T08:35:22Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-9cf0e140d6ae47a59cb3fcb6ee33da6e2023-11-22T08:42:35ZengMDPI AGMetals2075-47012021-08-01118130410.3390/met11081304Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium AlloyMoritz Neuser0Olexandr Grydin1Anatolii Andreiev2Mirko Schaper3Department of Mechanical Engineering, Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyDepartment of Mechanical Engineering, Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyDepartment of Mechanical Engineering, Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyDepartment of Mechanical Engineering, Paderborn University, Mersinweg 7, 33100 Paderborn, GermanyImplementing the concept of mixed construction in modern automotive engineering requires the joining of sheet metal or extruded profiles with cast components made from different materials. As weight reduction is desired, these cast components are usually made from high-strength aluminium alloys of the Al-Si (Mn, Mg) system, which have limited weldability. The mechanical joinability of the cast components depends on their ductility, which is influenced by the microstructure. High-strength cast aluminium alloys have relatively low ductility, which leads to cracking of the joints. This limits the range of applications for cast aluminium alloys. In this study, an aluminium alloy of the Al-Si system AlSi9 is used to investigate relationships between solidification conditions during the sand casting process, microstructure, mechanical properties, and joinability. The demonstrator is a stepped plate with a minimum thickness of 2.0 mm and a maximum thickness of 4.0 mm, whereas the thickness difference between neighbour steps amounts to 0.5 mm. During casting trials, the solidification rates for different plate steps were measured. The microscopic investigations reveal a correlation between solidification rates and microstructure parameters such as secondary dendrite arm spacing. Furthermore, mechanical properties and the mechanical joinability are investigated.https://www.mdpi.com/2075-4701/11/8/1304cast aluminium alloysand castingmicrostructuredendrite arm spacingmechanical joinabilityclinching |
| spellingShingle | Moritz Neuser Olexandr Grydin Anatolii Andreiev Mirko Schaper Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy Metals cast aluminium alloy sand casting microstructure dendrite arm spacing mechanical joinability clinching |
| title | Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy |
| title_full | Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy |
| title_fullStr | Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy |
| title_full_unstemmed | Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy |
| title_short | Effect of Solidification Rates at Sand Casting on the Mechanical Joinability of a Cast Aluminium Alloy |
| title_sort | effect of solidification rates at sand casting on the mechanical joinability of a cast aluminium alloy |
| topic | cast aluminium alloy sand casting microstructure dendrite arm spacing mechanical joinability clinching |
| url | https://www.mdpi.com/2075-4701/11/8/1304 |
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