from the conferences organized by TANGER Ltd.
The phase transformations which occur in 38CrAlMo6-10 steel were analysed at various temperatures, particularly in the intercritical Ac1-Ac3 region, by means of computer simulations and by dilatometric tests. In the study, the effects of heat treatment conditions in the intercritical region on the martensitic and bainitic transformations and on the Ms temperature were investigated. On the basis of obtained results, the conditions for annealing in the intercritical region before isothermal quenching were proposed. Such treatment led to the formation of the multiphase microstructure, which consisted of carbide-free bainite with austenite in the ferritic matrix in 38CrAlMo6-10 steel. The obtained results indicate that the computer simulations supported by dilatometric measurements of phase transformations may are an effective method for planning the heat treatment in the intercritical region.
Keywords: Multiphase steels, phase transformation simulations, dilatometric tests, phase transformation in Fe alloys, heat treatment© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.