Microtwin formation in the α phase of duplex titanium alloys affected by strain rate

▶ The long and dense twins in α phase of SP700 alloy occurring at lower strain rates promote a good ductility. ▶ The deformation in SP700 alloy changed to micro twins-controlled mechanism in α as the strain rate decreases. ▶ The material has time to redistribute the deformed strain between α and β as the strain rate decreases.