Reference : Friction coefficients evaluation for steel thixoforging

	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Materials science & engineering Engineering, computing & technology : Mechanical engineering
	To cite this reference:	http://hdl.handle.net/2268/62454

Title :	Friction coefficients evaluation for steel thixoforging
Language :	English
Author, co-author :	Pierret, Jean-Christophe [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
	Rassili, Ahmed [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
	Vaneetveld, Grégory [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
	Bigot, R. [ > > ]
	Lecomte-Beckers, Jacqueline [Université de Liège - ULg > Département d'aérospatiale et mécanique > Science des matériaux métalliques >]
Publication date :	2010
Main document title :	Proceedings of The 13th Esaform Conference on Material Forming (2010) - semi-solid processing
On invitation :	No
Audience :	International
City :	Brescia
Country :	Italy
Keywords :	[en] Thixoforming ; thixoforging ; steel ; friction
Abstract :	[en] Since the first works on thixoforming, lot of studies have been performed all over the world and the behaviour of the globular semi-solid slurry is now quite well understood. This knowledge had lead to an industrialisation of the technology for low melting point alloys as aluminium or magnesium. For high melting point alloys as steel, this industrialisation is still a wish but seems closer each year. In the aim of this development of the process, it is important to be able to accurately represent the behaviour of the slurry during thixoforming. In this goal, lot of constitutive models has been proposed during the last years. However, until now there isn’t any study about the friction in the case of thixoforming. This knowledge is needed as friction has an important effect on the flow of the slurry during the shaping. The aim of this work is so to propose a quantification of the friction coefficients for the thixoforming technology thanks to experiments on a dedicated tool and comparison with simulations run on the finite elements code Forge2008©. The friction law is a Coulomb limited Tresca one.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/62454

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