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Título: | The effect of lateral off-set on the tensile strength and fracture of dissimilar friction stir welds, 2024Al alloy and 17%SiC/2124Al composite |
Autor: | Cioffi, F.; Ibáñez, Joaquín CSIC; Fernández, Ricardo CSIC ORCID CVN; González-Doncel, Gaspar | Palabras clave: | Weld interface Mechanical properties Metal matrix composites Non-ferrous metals and alloys Dissimilar Friction Stir Welding |
Fecha de publicación: | 2015 | Editor: | Elsevier | Citación: | Materials and Design 65: 438-446 (2015) | Resumen: | © 2014 Elsevier Ltd. Welding a high quality aluminum matrix discontinuously reinforced composite is a difficult task and can be expensive. Joining the composite to a commercial aluminum alloy can reduce costs by only using the expensive material where it is needed. The solid state process Friction Stir Welding, FSW, is a promising alternative to fusion welding techniques since it can avoid the problems related to the molten metal and its solidification. We study the effect of the lateral off-set on the strength and fracture location in welds of 8. mm thick 2024Al alloy and 17%SiC/2124Al composite. We used a novelty diagonal set up to adjust the rotational and welding speed, and to select the three lateral off-sets for straight welds. The lateral off-set determines the amount of plastic deformation that the plates' contact surface undergoes. Therefore, it affects the shape and bonding quality of the alloy-composite boundary, which determines the strength of these welds. The highest joint efficiency (90% of 2024Al-T351) was obtained for the centered off-set, which had the most resistant boundary. However, the results suggest that a joint with an off-set of around 1.5. mm into the retreating side could exceed the efficiency obtained. | URI: | http://hdl.handle.net/10261/112543 | DOI: | 10.1016/j.matdes.2014.09.042 | Identificadores: | doi: 10.1016/j.matdes.2014.09.042 issn: 1873-4197 |
Aparece en las colecciones: | (CENIM) Artículos |
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