系统研究了热机械工艺对Ti-1023合金组织与性能的影响,获得了较好的热机械工艺.结果表明:对Ti-1023合金进行双重时效(300℃/8h+500℃/16h)处理,低温时效过程中析出的过渡ω相为高温时效过程中次生α相的析出提供均匀的形核点,从而获得弥散分布的次生α相;对该合金进行热轧变形,获得细小的β晶粒组织,同时变形过程中产生的缺陷为随后时效过程中的相变提供形核位置,使析出的次生α相更加弥散、细小;因此变形和双重时效共同作用可以使合金在显著提高强度的同时保证塑件的提高.Ti-1023合金经845℃,45%的热轧变形并双重时效(300℃/8h+500℃/16h)处理后具有理想的显微组织特征.
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