Abstract
This paper investigates the stress-strain state and the features of structural transformation in materials with different types of crystalline lattices in the process of deformation by free bending of axis-symmetrical billets. As the materials for the study, we selected oxygen-free M00B Cu and Grade 4 CP Ti. Using mathematical modeling, we study the stress-strain state of the samples from the selected materials in the process of bending via different routes. We study the structure in the mesoscale and determine the features of structural transformation. It is found that in the process of bending of Cu, a refined surface layer with a thickness of 20-30 μm and a cell size of ≈1 μm forms already after 1 processing cycle. In the process of bending of Ti, twinning occurs in peripheral regions, and the efficiency of twinning via route C is higher than that via route A. The most efficient, in terms of strengthening, processing routes of bending are determined.
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