Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy
In this work, the effect of rapid quenching from the partially liquid and solid condition is studied on the as-cast microstructure, tensile properties and fracture features of a secondary hypereutectic Al-18%Si-2%Cu alloy. For comparison purposes, the same ingots of 50 mm in diameter and 300 mm in h...
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MDPI AG
2020-06-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/10/6/819 |
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| author | Alexander Chaus Evgeny Marukovich Martin Sahul |
| author_facet | Alexander Chaus Evgeny Marukovich Martin Sahul |
| author_sort | Alexander Chaus |
| collection | DOAJ |
| description | In this work, the effect of rapid quenching from the partially liquid and solid condition is studied on the as-cast microstructure, tensile properties and fracture features of a secondary hypereutectic Al-18%Si-2%Cu alloy. For comparison purposes, the same ingots of 50 mm in diameter and 300 mm in height were also fabricated using conventional chill casting. The microstructure of the samples was subjected to detailed characterisation using scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses. The tensile properties and fracture were also evaluated. A significant grain refinement of the eutectic constituents (α (Al) + Si), as well as primary silicon and intermetallics accompanying coarse plate and Chinese script with a well-dispersed morphology transition for the intermetallics, was observed in the alloy subjected to the rapid quenching. The connection between primary and eutectic silicon was shown metallographically, confirming the fact that primary silicon served as a nuclei site for eutectic silicon. The microstructure refinement, together with a favourable morphology transition, resulted in greatly enhanced tensile properties and the more ductile fracture behaviour of the studied alloy. |
| first_indexed | 2024-03-10T19:01:52Z |
| format | Article |
| id | doaj.art-0bc5962f28a14e6caaae4f2c8595b006 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T19:01:52Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-0bc5962f28a14e6caaae4f2c8595b0062023-11-20T04:20:51ZengMDPI AGMetals2075-47012020-06-0110681910.3390/met10060819Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu AlloyAlexander Chaus0Evgeny Marukovich1Martin Sahul2Institute of Production Technologies, Faculty of Materials Sciences and Technology, Slovak University of Technology, 917 24 Trnava, SlovakiaInstitute of Technology of Metals, National Academy of Science of Belarus, 212030 Mogilev, BelarusInstitute of Material Sciences, Faculty of Materials Sciences and Technology, Slovak University of Technology, 917 24 Trnava, SlovakiaIn this work, the effect of rapid quenching from the partially liquid and solid condition is studied on the as-cast microstructure, tensile properties and fracture features of a secondary hypereutectic Al-18%Si-2%Cu alloy. For comparison purposes, the same ingots of 50 mm in diameter and 300 mm in height were also fabricated using conventional chill casting. The microstructure of the samples was subjected to detailed characterisation using scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses. The tensile properties and fracture were also evaluated. A significant grain refinement of the eutectic constituents (α (Al) + Si), as well as primary silicon and intermetallics accompanying coarse plate and Chinese script with a well-dispersed morphology transition for the intermetallics, was observed in the alloy subjected to the rapid quenching. The connection between primary and eutectic silicon was shown metallographically, confirming the fact that primary silicon served as a nuclei site for eutectic silicon. The microstructure refinement, together with a favourable morphology transition, resulted in greatly enhanced tensile properties and the more ductile fracture behaviour of the studied alloy.https://www.mdpi.com/2075-4701/10/6/819Al-18%Si-2%Cu alloyrapid quenchingmicrostructureintermetallictensile propertiesfracture |
| spellingShingle | Alexander Chaus Evgeny Marukovich Martin Sahul Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy Metals Al-18%Si-2%Cu alloy rapid quenching microstructure intermetallic tensile properties fracture |
| title | Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy |
| title_full | Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy |
| title_fullStr | Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy |
| title_full_unstemmed | Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy |
| title_short | Effect of Rapid Quenching on the Solidification Microstructure, Tensile Properties and Fracture of Secondary Hypereutectic Al-18%Si-2%Cu Alloy |
| title_sort | effect of rapid quenching on the solidification microstructure tensile properties and fracture of secondary hypereutectic al 18 si 2 cu alloy |
| topic | Al-18%Si-2%Cu alloy rapid quenching microstructure intermetallic tensile properties fracture |
| url | https://www.mdpi.com/2075-4701/10/6/819 |
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