Reference : Conception of tooling adapted to the thixoforging of high solid fraction hot-crack-sensi...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/35580
Conception of tooling adapted to the thixoforging of high solid fraction hot-crack-sensitive aluminium alloys
English
[fr] Conception d'outillage adapté au thixoforgeage d'alliages d'aluminium à haute fraction solide sensibles à la fissuration à chaud
Vaneetveld, Grégory mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Rassili, Ahmed mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Pierret, Jean-Christophe [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Lecomte-Beckers, Jacqueline mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Sep-2010
Transactions of Nonferrous Metals Society of China
20
9
Proceedings of the 11th International Conference on Semi-Solid Processing of Alloy and Composites
1712-1718
Yes
International
1003-6326
[en] thixoforging ; solid fraction ; tooling
[en] Thixoforging is a type of semi-solid metal processing at high solid fraction (0.7<fs<1), which involves the processing of alloys in the semi-solid state. Tooling has to be adapted to this particular process to benefit of shear thinning and thixotropic behaviour of such semisolid material. Tooling parameters, as the forming speed and tool temperature, have to be accurately controlled because of their influence on thermal exchanges between material flow and tool. These thermal exchanges influence the high-cracking tendency and the rheology of the semisolid material during forming which affect parts properties. This paper shows, thanks to extrusion tests, how thermal exchanges influence surface quality of thixoforged parts made in 7075 aluminium alloys at high solid fraction by modifying process parameters like forming speed, tool temperature and tool thermal protector. A direct application is the evaluation of surface quality of thixoforged thin wall parts made in 7075 aluminium alloys.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/35580
also: http://hdl.handle.net/2268/8313

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