Effect of Severe Caliber Rolling on Superplastic Properties of Mg-3Al-1Zn (AZ31) Alloy

Abstract:

Fine grains were developed in Mg-3Al-1Zn (AZ31) alloy by isothermal caliber rolling at five different temperatures in the range of 250-450°C. The samples of different grain sizes were deformed by constant strain rate and differential strain rate test techniques over the temperature range of 220-450 °C and strain rate range of 10-5 to 10-1 s-1. The effects of grain size, test temperature and strain rate on flow st^{SuperscSuperscript text}ript textress were analysed to develop the constitutive relationship for sup^{Superscript text}erplastic deformation. The parameters of the constitutive relationship obtained from the constant strain rate tests and differential strain rate tests were used to find out the material constant A of the constitutive relationship.

• Periodical: Materials Science Forum (Volume 735)
• Pages: 327-331
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.735.327
• Online since: December 2012
• Authors: Rajendra Doiphode, Rahul Ramesh Kulkarni, S.V.S. Narayana Murty, Nityanand Prabhu, Bhagwati Prasad Kashyap
• Keywords: AZ31 Mg-Alloy, Caliber Rolling, Severe Plastic Deformation (SPD), Superplasticity

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