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TECHNICAL PAPERS

An Investigation of Yield Potentials In Superplastic Deformation

[+] Author and Article Information
Marwan K. Khraisheh

Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia e-mail: mkhraish@kfupm.edu.sa

J. Eng. Mater. Technol 122(1), 93-97 (May 14, 1999) (5 pages) doi:10.1115/1.482771 History: Received November 15, 1998; Revised May 14, 1999
Copyright © 2000 by ASME
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References

Figures

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The axial stress component in a combined tension/torsion test. Effective strain rate 6.5×10−4 s−1,k=0.45.
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The shear stress component in a combined tension/torsion test. Effective strain rate 6.5×10−4 s−1,k=0.45.
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The yield potential for the Pb-Sn superplastic alloy. Effective strain rate 3×10−4 s−1. Experimental data versus von Mises and the anisotropic functions.
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The yield potential for the Pb-Sn superplastic alloy. Effective strain rate 6.5×10−4 s−1. Experimental data versus von Mises and the anisotropic functions.
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The yield potential for the Pb-Sn superplastic alloy. Effective strain rate 1×10−3 s−1. Experimental data versus von Mises and the anisotropic functions.
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Schematic illustration of the axis of anisotropy and the angle ϕ
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The effect of the angle ϕ on the anisotropic yield surface for tension-torsion case (equation 11). c1=1,c2=5, and c3=4. The dashed line represents von Mises surface (c1=c2=c3=0).
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The effect of c1 on the anisotropic yield surface for tension-torsion case (Eq. (11)). ϕ=30°,c2=5, and c3=4. The dashed line represents von Mises surface (c1=c2=c3=0).
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The effect of c2 on the anisotropic yield surface for tension-torsion case (Eq. (11)). ϕ=30°,c1=1, and c3=4. The dashed line represents von Mises surface (c1=c2=c3=0).
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The effect of c3 on the anisotropic yield surface for tension-torsion case (Eq. (11)). ϕ=30°,c1=1, and c2=5. The dashed line represents von Mises surface (c1=c2=c3=0).

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