On the Behavior of Ti Alloys duringDeforming in Near Superplastic Regimes

摘要

Traditionally, conditions under which superplastic deformation of polycrystalline material takes placeinclude certain ranges of temperatures, strain rates and some limitations on the grain size. Howeverneither exact criteria, nor mathematically formulated and determined domain of superplasticity arecurrently developed. In this article attempts are made to formulate the notion of the superplasticdomain and its boundaries. To illustrate the behavior of the material near the boundary of the domainthe results of the experiments on Ti-6A1-4V alloy with β-annealed microstructure are presented.