Use of superplastic deformation and diffusion welding to form a tee designed with a complex set of internal stiffening elements

A method is described for making a tee designed with a complex set of internal stiffening elements. The article describes the main stages of the modern process of pneumothermal forming in the superplastic regime with the use of diffusion welding. The production of a tee by superplastic pneumothermal forming after diffusion welding is modeled and the calculated results are presented. © 2013 Springer Science+Business Media New York

Effect of the average velocity of the free part of the semifinished product on the process of pneumothermal forming in the superplastic regime

Results are presented from two experiments involving the pneumothermal forming of a cellular product of alloy OT4-1 in the superplastic regime. It was determined that the average velocity of the free part of the semifinished product must be taken into account when using a model in which the stresses depend directly on the deformation rate. © 2013 Springer Science+Business Media New York