Abstract. Grain boundary sliding, a deformation mechanism of superplasticity, occurs only at high temperatures, making it difficult for superplastic steels to be practically applied due energy consumption and surface oxidation. Therefore, in the present study, we introduce newly developed Si-added medium-Mn steel, which can superplastically deformed such low temperature 763 K. The low-temperatu...

Superplasticity denotes the ability of a limited number materials to achieve exceptionally high tensile elongations at least 400%. Experiments show that Al-Mg-Sc alloys provide excellent capabilities for achieving superplastic flow and also they can be formed easily in biaxial forming operations. It is important, therefore, examine mechanism when alloy prepared using different procedures. This ...

In this paper, the equiaxed superfine/nanocrystalline duplex PM-TiAl-based alloy with (γ + α₂) microstructure, Ti-45Al-5Nb (at %), has been synthesized by high-energy ball milling and vacuum hot pressing sintering. Superplastic deformation behavior has been investigated at 1000 °C and 1050 °C with strain rates from 5 × 10-5 s-1 to 1 × 10-3 s-1. The effects of deformation on the microstructure a...

Abstract This study set out to look at the influence of nickel additions on a commercially available AA7020 understand impact resultant intermetallics recrystallization, formability and material strength. Elevated temperature tensile testing across range strain rates (5 × 10 −4 s −1 ) three temperatures (450− 500 °C) compare ductility followed by gas bulge 475 °C two pressures investigate in te...