Abstract
The tensile properties of extruded Ti–6Al–4V–xB alloys (wt.%) were evaluated in an orientation
perpendicular to the extrusion direction at room-temperature and 455 °C. The extrusion process
preferentially oriented the basal plane of α-Ti perpendicular to the extrusion axis. This strong α-
phase texture resulted in tensile anisotropy. The tensile strength in the transverse orientation
was lower than that in the longitudinal orientation, but it remained greater than that for the ascast
Ti–6Al–4V. The TiB phasewas aligned in the extrusion direction and increased B content was
found to weaken the α-phase texture, causing a weakening of tensile anisotropy. Debonding was
not observed during the tensile tests in the transverse orientation, indicating a strong interface
bond exists between the TiB phase and the two-phase (α+β) Ti–6Al–4V matrix.