Microstructure Evolution of the Ti-6.62Al-5.14Sn-1.82Zr Alloy in the Superplastic Compression

Abstract:

Superplastic compression of the Ti-6.62Al-5.14Sn-1.82Zr alloy were carried out at a Thermecmaster-Z simulator at deformation temperatures of 960°C, 980°C, 1000°C and 1020°C, strain rate of 0.001 s-1, 0.01 s-1 and 0.1 s-1, and height reduction of 50%, 60% and 70%. The α phase decreases with the increasing of deformation temperature, and the grain size of α phase has a slight variation with the deformation temperature. The strain rate affects both the morphologies and the grain size of α phase, and the optimal strain rate makes the grains be fine. The optimal height reduction also makes the α phase be fine and well distributed on the matrix of Ti-6.62Al-5.14Sn-1.82Zr alloy after superplastic compression.

• Periodical: Materials Science Forum (Volumes 551-552)
• Pages: 379-382
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.551-552.379
• Online since: July 2007
• Authors: Miao Quan Li, H.S. Pan, Ying Ying Lin
• Keywords: Microstructure, Superplastic Compression, TiAl

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