The fracture process in a fine-grained superplastic 7475 Al alloy |
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| Authors: | Rao K Mahidhara |
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| Affiliation: | High Performance Materials Inc., Campus Box 1087, Washington University, St Louis, MO 63130, USA |
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| Abstract: | In order to contribute towards alloy design and therefore an improvement in fracture toughness of engineering materials in general, the effect of temperature, strain rate and strain level on the superplastic deformation, cavity nucleation and growth, and fracture behaviour are studied in an important rate-sensitive structural engineering material, 7475 Al, in the light of current models and thinking. The efficacy of hydrostatic pressure in reducing cavitation during superplastic deformation is considered. |
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| Keywords: | 7475 Al alloy strain rate superplasticity cavitation |
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