The results of research of the effects of combined process of hole cold expansion with interference-fit strengthening on improving fatigue life of TC-4(Ti-6Al-4v) titaninum alloy when bush is not used are presented.

• 介绍TC4(Ti-6Al-4V)钛合金螺栓孔无衬套冷胀孔干涉配合综合强化的研究结果。