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Friction coefficients evaluation for steel thixoforging

  • Semi-solid processes: D. Brabazon
  • Published:
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Abstract

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 and magnesium. For high melting point alloys as steel, this industrialisation is still a wish but many achievements are reached 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, a lot of constitutive models have been proposed during the last years [1]. However, until now there are really few studies 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 to propose a quantification of the friction coefficients for the thixoforming technology thanks to experiments on a dedicated tool and comparison with finite elements simulations run on the code Forge2008©. The used friction law is a Coulomb limited Tresca one.

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References

  1. H.V. Atkinson: Modelling of Semi-Solid Processing. Shaker Verlag GmbH Aachen 2008.

  2. J.C. Pierret, A. Rassili and P. Cezard: Simulation of semi-solid thixoforming : comparison of different constitutive equations. Solid-State Phenomena 116–117, pp 618–621

  3. J. Lecomte-Beckers, A. Rassili, M. Carton, M. Robelet and R. Koeune: Study of the liquid fraction and thermophysical properties of semi-solid steels and application to the simulation of inductive heating for thixoforming. Advanced Methods in Material Forming vol.8, 2007

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  6. O. Barreau : Etude du frottement et de l’usure d’aciers à outil de travail à chaud, PhD thesis. Institut National de Polytecnique de Grenoble, France 2004

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Authors and Affiliations

  1. University of Liège - Dept. of Aerospace and Mechanical Engineering PIMW-B56, Boulevard de Colonster, 4 4000, Liège, Belgium

    J. C. Pierret, A. Rassili & G. Vaneetveld

  2. Arts et Métiers ParisTech, LCFC, 57078, Metz, Technopôle, France

    R. Bigot

  3. MMS ULg, B52, University of Liège, Sart Tilman, 4000, Liège, Belgium

    J. Lecomte-Beckers

Authors
  1. J. C. Pierret
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  2. A. Rassili
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  3. G. Vaneetveld
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  4. R. Bigot
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  5. J. Lecomte-Beckers
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Correspondence to J. C. Pierret.

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Pierret, J.C., Rassili, A., Vaneetveld, G. et al. Friction coefficients evaluation for steel thixoforging. Int J Mater Form 3 (Suppl 1), 763–766 (2010). https://doi.org/10.1007/s12289-010-0882-1

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  • DOI: https://doi.org/10.1007/s12289-010-0882-1

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