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An investigation of yield potentials in superplastic deformation

Article Abstract:

In this article yield potential for the Pb-Sn superplastic alloy is derived experimentally using combined tension/torsion method. Analysis reveals that a hypothetically derived anisotropic yield function represents the experimental yield potentials at the superplastic regions.

Author: Khraisheh, Marwan K.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2000
United States, Statistical Data Included, Analysis, Anisotropy, Superplasticity

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Modeling of anisotropic deformation in superplastic sheet metal stretching

Article Abstract:

The analysis of superplastic deformation under a plane stress condition is presented to simulate actual superplastic sheet metal forming. A general constitutive model that accounts for microstructural evolution and anisotropy is developed.

Author: Khraisheh, Marwan K., Abu-Farha, Fadi K.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 2005
Product information, Testing, Strains and stresses, Stresses (Materials), Mechanical properties, Superplastic forming (Metalwork), Superplastic forming

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Optimum forming loading paths for Pb-Sn superplastic sheet materials

Article Abstract:

Different forming pressure-time profiles were used to evaluate the bulge forming performance of Pb-Sn superplastic sheet materials. An optimum pressure-time profile was also proposed based on variable strain rates. The results showed that the forming time was significantly reduced and the integrity of the formed part maintained. In addition, forming profiles using uniaxial models as a basis did not successfully predict actual forming behavior when the loading path was biaxial.

Author: Khraisheh, Marwan K., Zbib, Hussein M.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1999

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Subjects list: Research, Deformations (Mechanics), Deformation, Sheet-metal, Sheet metal
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