为了研究两相钛合金中α和β相的协调演变行为,在不同条件下对合金进行热压缩和热处理.研究结果表明,α和β相之间的协调变形能力能影响显微组织演变的均匀性.当变形协调能力较好时,α相保持原来的片状结构,β相的再结晶程度较低.此时,尽管变形较大,但α相与两侧的β相仍保持Burgers取向关系,α和β相之间的原始相界面没有被破坏.随着变形协调能力的下降,片状α相的变形程度及β相的再结晶程度增加.此时,α相仅与一侧的β相保持Burgers取向关系,而与另一侧的β相取向产生偏移,偏移角度在10°以内.当变形协调能力较差时,α相和β相发生较为严重的偏移,界面位错程度增大,α相与周围的β相偏离Burgers取向关系.“,”The evolution of coordination between α and β phases for a two-phase titanium alloy was investigated. For this purpose, hot compression and heat treatment under different conditions were carried out. The results show that the ability of coordinated deformation between α and β phases can influence uniformity of microstructure evolution. Specifically, α phase maintains the lamellar structure and β phase has a low degree of recrystallization when the ability of coordinated deformation is good. In this case, α and β phases still maintain the BOR (Burgers orientation relationship), and their interface relationship is not destroyed even at large deformation. Both of the deformation extent of α lamellae and recrystallization degree of β phase increase with the decline of ability of coordinated deformation. The α phase only maintains the BOR with β phase on one side, while the uncoordinated rotation with the β phase on the other side occurs within 10°. The α and β phases rotate asynchronously when ability of coordinated deformation is poor. The degree of interface dislocation increases, and α and β phases deviate from the BOR.