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Finite Element Modeling of Superplastic Forming in the Presence of Back Pressure

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Abstract:

It is established that some superplastic materials undergo significant cavitation during deformation. Cavitation not only limits the superplastic ductility of the material, but also reduces the service properties and the fatigue performance of the formed parts. Experimental results have shown that an effective method to eliminate cavitation is the application of hydrostatic pressure during deformation. In this work, finite element simulations are carried out to study the effects of hydrostatic pressure on damage evolution during SPF. The analysis is conducted for the superplastic copper based alloy Coronze-638 at 550 °C. The results clearly demonstrate the effectiveness of the superimposition of hydrostatic pressure in reducing the amount of cavities generated during SPF and improving the integrity of the formed part.

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Periodical:

Materials Science Forum (Volumes 551-552)

Pages:

257-262

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.551-552.257

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Online since:

July 2007

Authors:

Mohammad Nazzal, Marwan K. Khraisheh

Keywords:

Cavitation, Finite Element Model (FEM), Hydrostatic Pressure, Super Plastic Forming (SPF)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] A. Varloteaux and M. Surey: Superplasticity in Aerospace-Aluminum (1985), p.55.

Google Scholar

[2] J. Pilling and N. Ridley: Superplasticity in Crystalline solids (The Institute of Metals, London 1989).

Google Scholar

[3] M.J. Stowell: Metal Science Vol. 17 (1983), p.92.

Google Scholar

[4] H.S. Yang, K. Mukherjee and W.T. Roberts: Materials Science and Technology Vol. 8 (1992), p.611.

Google Scholar

[5] S. Quan, K. Shu-Qing and Z. Wang: Journal of Materials Science Vol. 30 (1995), p.2549.

Google Scholar

[6] J. Pilling and N. Ridley: Acta Metall. Vol. 34 (1986) p.669.

Google Scholar

[7] Y. Dafalias: Int. Journal of Solids Structures Vol. 26 (1990), p.149.

Google Scholar

[8] J. Lubliner: Plasticity Theory (Macmillan Publishing Co., New York 1990).

Google Scholar

[9] C.H. Caceres and D.S. Wilkinson: Acta Metall. Vol. 32 (1984), p.415.

Google Scholar

[10] M.A. Nazzal, M.K. Khraisheh and B.M. Darras: Journal of Materials Engineering and Performance Vol. 13 (2004), p.691.

Google Scholar

[11] Abaqus/Analysis User's Manual, Version 6. 5, Vol. 4 (2004).

Google Scholar