Abstract
Titanium has great advantages, such as nontoxicity and high biocompatibility. Recently, it has begun to be used with high expectations in the medical field, such as for fabricating guide wire, orthodontic wires and microparts of medical appliances. However, because the plastic workability of titanium is inferior to that of other metals, there is difficulty in manufacturing titanium products, such as extrafine wires and microscrews, without cracks and other defects. In this study, we examined the effects of the amounts of 0 and N on workability and product strength during drawing, heading and rolling, and clarified the optimal conditions for cold drawing. We can infer the magnitude of the drawing limit on the basis of the break strain of mother wire. The fabrication of the guide wire, microspring and microscrews in medical fields as an application of the obtained drawn wire are also targeted in this study.
