Improved Mechanical Properties of Al-Si Alloys by Adding an Extrusion Process to Conventional Processing Method
| Autor: | Han J.Y., Femi O.E., Kilicaslan F., Jeong C.U., Baeg C.H., Hong S.J., Koo J.M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Archives of Metallurgy and Materials, Vol 62, Iss 2, Pp 1179-1183 (2017) |
| Druh dokumentu: | article |
| ISSN: | 2300-1909 2017-0173 |
| DOI: | 10.1515/amm-2017-0173 |
| Popis: | In this study, the mechanical properties of Al-Si alloys was improved by selecting higher Si content and avoiding distortion in Al-Si matrix by adding an extrusion process such that the fabrication processes casting and extrusion were in sequence. Cast billets were extruded at ratios 4:1 and 10:1 to obtained two extruded bars with different processing parameters. The as-extruded samples were characterized and investigated for microstructure and mechanical properties. Optical Microscope was used to examined phase morphologies and microstructures of the extruded Al-Si bars. Mechanical properties were conducted on each sample to study the effectiveness of the additional extrusion process in high Si content Al-Si alloys. The result shows that by increasing the extrusion ratio, the size of the primary Si particle reduces leading to a higher density, better tensile and yield strength compared to the cast billet. |
| Databáze: | Directory of Open Access Journals |
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