Severe plastic deformation and strengthening of titanium in the process of pipes rotational rolling
The structure and mechanical properties of plugged titanium tubes have been studied. It was determined that plugging provides a formation of tubes without any continuity loss with deformation degree of about 65%. Plugging was found to be an appropriate way of forming a homogeneous structure with constant micro hardness rate over the entire wall thickness. Plugging with deformation degree equal to 53…55% provides the best combination of strength and plasticity. Under a tube plugging equal to 53%, ultimate strength increases from 387 to 705 MPa.