| 摘要 |
PURPOSE:To improve strength, toughness and mechanical properties in welding titanium alloys to each other by butting these via a specific insert material, and welding these by high energy density welding then subjecting the butt parts to an after heat treatment. CONSTITUTION:Pure titanium or a material contg. <=3.0wt% aluminum and consisting of the balance substantially titanium is used for an insert material 3 to be interposed in the butt parts of titanium alloys. The titanium alloys are butted to each other by way of such insert materials 3, and the butt parts are welded by high energy density welding, after which they are subjected to a heat treatment. Stress relief annealing, diffusion treatment, solid-solution treatment, aging, etc. are properly selected for the heat treatment. |
