Formation features of structure of wire made of austenitic-martensitic trip-steel VNS9-Sh during drawing

Abstract

Structural-phase transformations in various sections of austenitic wire rod made of martensitic trip-steel VNS9-Sh (23Kh15N6AM3-Sh) at various stages of cold drawing are discussed. It was found that the structure of the near-surface layers of the wire with a diameter of 0.36 mm is completely austenitic. Based on the results of computer simulation of the stress distribution in the wire cross section, an assumption was made about the nature of the formation of such a structure.