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Experimental study and superplastic rheological characterization of Ti-6Al-4V

Published online by Cambridge University Press:  19 November 2004

David Ollivier ,
Youssef Aoura ,
Abdelhak Ambari  and
Serge Boude
David Ollivier
Affiliation:
EMT, ENSAM CER d'Angers, 2 Bd du Ronceray, BP 3525, 49035 Angers Cedex, France
Youssef Aoura
Affiliation:
EMT, ENSAM CER d'Angers, 2 Bd du Ronceray, BP 3525, 49035 Angers Cedex, France
Abdelhak Ambari
Affiliation:
EMT, ENSAM CER d'Angers, 2 Bd du Ronceray, BP 3525, 49035 Angers Cedex, France
Serge Boude
Affiliation:
EMT, ENSAM CER d'Angers, 2 Bd du Ronceray, BP 3525, 49035 Angers Cedex, France
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Abstract

The superplastic behaviour of a titanium alloy base Ti-6Al-4V during biaxial test was investigated. A numerical model using a finite element method is proposed to examine the superplastic deformation behaviour of an appropriate axisymmetric shaped part. An experimental procedure based on the measurement of the pressure applied and the height of the dome apex of the formed part, is used to identify the rheological parameters of the material behaviour law. This identification was carried out by comparisons between the results of simulation and experimentation relating to thickness, equivalent strain and stress. Three inflation tests were carried out at different equivalent strain rates (4×10-4, 6×10-4 and 8×10-4 s-1).This procedure is applied successfully to the forming of an industrial part. Indeed, this study henceforth allows one to predict thickness evolution in any point of an industrial part for an optimization of its uniformity.

Keywords

Superplastic formingAnand modelTi alloyTi-6Al-4Vaxisymmetric complex shapeFormage superplastiquemodèle d'Anandalliage de titaneTi-6Al-4Vmatrice axisymétrique complexe
Type
Research Article
Information
Mechanics & Industry , Volume 5 , Issue 5 , September 2004 , pp. 511 - 517
Copyright
© AFM, EDP Sciences, 2004

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References

B. Baudelet, Mise en forme superplastique, Revue Française de mécanique n° 2 (1989)
Mutoh, Y., Kobayashi, M., Mae, Y., Satoh, T., Fatigue properties of SPF/DB joints in titanium alloys, Superplasticity in Advanced Mater., S. Hori, M. Tokizane, N. Furushiro (ed.), The Japan Soc. For Research on superplasticity (1991) 405–410 Google Scholar
Ghosh, A.K., Hamilton, C.H., Mechanical behavior and hardening characteristics of a superplastic Ti-6Al-4V alloy, Metall. Trans. A 10 (1979) 699–706 CrossRef
Grimes, R., Butler, R.G., The forming behavior of commercially available superplastic aluminium alloys, in: H.C. Heikkenen, T.R. Mcnelley (ed.), Superplasticity in Aerospace, The Metallurgical Society Inc. (1988) 97–114 Google Scholar
M. Bellet, Modélisation numérique du formage superplastique de tôles, Thèse, École nationale supérieure des mines de Paris, 1988
Chen, Z., Li, Z., Dang, P., Chandra, N., Behavior of titanium alloy under uniaxial and biaxial superplastic conditions, Modelling the Mech. Response of structural Mater., E.M. Taleff, R.K. Mahidhana (ed.), The Minerals, Metals & Mater. Soc. (1997) 191–199 Google Scholar
S. Boude, Maîtrise du procédé de formage superplastique et réalisation d'une installation pilote, Thèse, École centrale de Nantes, 1994
Z. Boulos, Interactions matériaux – procédé dans la mise en forme superplastique d'alliages réfractaires, Thèse, ENSAM d'Angers, 1999
Lechten, J.-P., Patrat, J.-C., Baudelet, B., Analyses théorique et expérimentale du gonflement dans le domaine de superplasticité, Revue de Physique Appliquée 12 (1977) 7–14 CrossRef
Chen, J.H., Lee, S., Methods for resolving Grooving Problems in Parts factored from combined Diffusion Bonding and Superplastic forming, J. Mat. Proc. Tech. (1994) 249
Lee, K.S., Huh, H., finite element simulation of superplastic punch forming with a thickness control ring, J. Mater. Process. Technol. 63 (1997) 684–689 CrossRef
Zhang, W.C., Wood, Zienkiewicz, Superplastic Forming using a Finite Element Viscous Flow Formulation, Inst. Metals 4 (1986) 1111
Zhou, M., Dunne, F.P.E., Mechanisms-based constitutive equations for the superplastic behavior of a titanium alloy, J. Strain Analysis 31 (1996) 187–196 CrossRef
Lin, J., Yang, J., GA-based multiple objective optimisation for determining viscoplastic constitutive equations for superplastic alloys, Int. J. Plasticity 15 (1999) 1181–1196 CrossRef
Anand, L., Constitutive equations for the rate-dependent deformation of metals at elevated temperatures, J. Eng. Mater. and Techn. Trans. ASME 104(1) (1982) 12–17 CrossRef
S. Timoshenko, Résistance des Matériaux 2e partie, Librairie Polytechnique Ch. Béranger, 1954, pp. 142–143
D. Ollivier, Le formage superplastique associé au soudage par diffusion appliqué à l'alliage à base de titane Ti-6Al-4V pour la fabrication de nacelles aéronautiques, Thèse, ENSAM d'Angers, 2003
Woo, D.M., The analysis of axisymmetric forming of sheet metal and the hydrostatic bulging process, Int. J. Mech. Sci. 6 (1964) 303–317 CrossRef
Storakers, B., Finite plastic deformation of a circular membrane under hydrostatic pressure, Int. J. Mech. Sci. 8 (1966) 619–628 CrossRef
Cheng, J.H., The determination of material parameters from superplastic inflation tests, J. Mater Process Technol 58 (1996) 233–246 CrossRef
Chen, Y., Kibble, K., Hall, R., Huang, X., Numerical analysis of superplastic blow forming of Ti–6Al–4V alloys, Materials & Design 22(8) (2001) 679–685 CrossRefPubMed