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