Abstract
Deformation behaviors of Ti–6.5Al–3.5Mo–1.5Zr–0.3Si alloys with α/β lamellar structure were investigated systematically at different temperatures from room temperature to 950 °C and different strain rates. Results reveal that when the deformation temperature is higher than a critical temperature of 600 °C, an evident transition of deformation behavior from localized shear banding to α/β lamella kinking, flow softening and temperature/strain rate-dependent peak flow stress occurred in the alloy. The critical conditions for the occurrence of internal cracking and strain localization behavior associated with temperature and strain rate were determined.
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