Dynamic Analysis on Superplastic Forming of Aluminium Alloy Sheet
Abstract
Super-plasticity is the ability of a polycrystalline material to exhibit, in a generally isotropic manner, very large elongations without necking prior to failure. Elongations in excess of 400% are usually referred to as super plasticity, although several alloys have exhibited elongations exceeding 1000%. The highest elongations reported are 4850% in a Pb-Sn eutectic alloy, and greater than 5500% for aluminum bronze. By using super-plasticity, complex shapes can be easily formed in high strength alloys. The present work of this paper is to achieve minimum thinning at the optimum process parameters in the superplastic forming of 7075 aluminum alloys.References
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