Macrostructural characterisation was performed for Ti-6Al-4V components produced by wire and arc additive manufacturing (WAAM) to investigate the effects of different deposition direction and interlayer dwell time on grain morphology of prior-β. By extending the interlayer dwell time between each deposited layer, the full equiaxed β grain were obtained. The results indicated that the equiaxed β grains at the bottom were caused by recrystallization. The sizes of the equiaxed β grains at the bottom were both affected by the thermal cycle and the degree of recrystallization.