Deformation modeling of superplastic AA-5083

M. A. Khaleel, K. I. Johnson, C. H. Hamilton, M. T. Smith

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The superplastic deformation characteristics of a modified aluminum alloy were investigated at temperature range from 500 to 550°C. The alloy chemical composition was 4.69% Mg, 1.56% Mn, 0.177% Cr, 0.03% Si, and 0.07% Fe by weight. Total tensile elongations as high as 750% were observed at lower strain rates. A non-isothermal constitutive equation, that includes the evolution of grain size, was established and implemented in a finite element code. Numerical simulations of the uniaxial tension specimen were performed, and good agreement between the testing and the modeling results was obtained. A pressure control algorithm for the blow forming model was developed based on an averaging scheme that considered a subset of finite elements with the highest strain rate. A pressure history was generated from the finite element simulations for a constant target strain rate of 1 × 10-3s-1. When these pressure histories were used in tray forming experiments, good agreement was obtained between the forming and modeling results.

Original languageEnglish
Pages (from-to)1133-1154
Number of pages22
JournalInternational Journal of Plasticity
Volume14
Issue number10-11
DOIs
Publication statusPublished - 1 Dec 1998
Externally publishedYes

Fingerprint

Strain rate
Superplastic deformation
Pressure control
Constitutive equations
Elongation
Aluminum alloys
Computer simulation
Testing
Chemical analysis
Experiments
Temperature

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Khaleel, M. A., Johnson, K. I., Hamilton, C. H., & Smith, M. T. (1998). Deformation modeling of superplastic AA-5083. International Journal of Plasticity, 14(10-11), 1133-1154. https://doi.org/10.1016/S0749-6419(98)00051-5

Deformation modeling of superplastic AA-5083. / Khaleel, M. A.; Johnson, K. I.; Hamilton, C. H.; Smith, M. T.

In: International Journal of Plasticity, Vol. 14, No. 10-11, 01.12.1998, p. 1133-1154.

Research output: Contribution to journalArticle

Khaleel, MA, Johnson, KI, Hamilton, CH & Smith, MT 1998, 'Deformation modeling of superplastic AA-5083', International Journal of Plasticity, vol. 14, no. 10-11, pp. 1133-1154. https://doi.org/10.1016/S0749-6419(98)00051-5
Khaleel MA, Johnson KI, Hamilton CH, Smith MT. Deformation modeling of superplastic AA-5083. International Journal of Plasticity. 1998 Dec 1;14(10-11):1133-1154. https://doi.org/10.1016/S0749-6419(98)00051-5
Khaleel, M. A. ; Johnson, K. I. ; Hamilton, C. H. ; Smith, M. T. / Deformation modeling of superplastic AA-5083. In: International Journal of Plasticity. 1998 ; Vol. 14, No. 10-11. pp. 1133-1154.
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