“…9b) and 1.6 ( Fig. 9c) dynamic recovery and recrystallisation [11,13,17,[29][30][31][32][33][34][35][36], and (iii) dynamic grain growth [37][38][39]. It is widely believed that grain boundary sliding is the main mechanism for superplasticity of Ti alloys, and grain boundary sliding is accommodated by diffusion creep and dislocation slip/creep or both [2,36,37,[40][41][42].…”