LOCALIZED SUPERPLASTIC BEHAVIOUR INα-TITANIUM AT HIGH STRAIN RATE

The microstructure ofx-Ti/mild steel composite fabricated by using constant stand-off cladding technique was observed with optical microscopy, SEM and TEM analvses. Veryfine equiaxed grains (<0.1μm) with a low dislocation density were observed in the adiabatic shear bands (.4SB);this enables a thermomechanical response that may lead to a superPlastic de formation.