Effect of Oxygen on Deformation Behavior of Texture Controlled Titanium

Abstract

Mechanical properties ofαTi are strongly influenced by texture and oxygen content． The effect of texture and oxygen content on the deformation behavior was investigated using three kinds of textured Ti sheets contain－ ing O．05，0．1，0．2 and O．4 mass％0． Especia11y， we paid attention to deformation twinning and〈c十a＞slip． Conse－ quently， it was follnd that occurrence of deformation twinning is suppressed and＜e十a＞dislocations become opera－ tive as the oxygen content increases． Therefore， anisotropy in mechanical properties due to the deformation twin－ ning disappears as the oxygen content increases． However， the operation of〈c十a＞slip having high critical resolved shear stress正eads to easy cleavage fracture and reduced e正ongation． （Received Janua巧r 6，1993）