Transformation textures in steels: A simulation based on micromechanical modeling data

A. ROATTA; A.L. FOURTY; R.E. BOLMARO

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

SPRINGER

Año: 2009 vol. 40 p. 1210 - 1218

1073-5623

The phase transformation of low-carbon steels is evaluated by means of computer simulations performed with a viscoplastic self-consistent (VPSC) code. The simulations allow calculating micromechanical data at high-temperature deformation that are currently inaccessible through experiments. The micromechanical data are later on used in phase transformation computer codes to evaluate the pre-eminence of certain transformation variants following different criteria. The texture results are compared with experimental results available in the literature. The main fibers and components develop and behave differently depending on the selection of hardening laws, fragmentation criteria, active slip systems, etc. The results are compatible with high-temperature textures characteristic of a high stacking fault energy (HSFE)–like alloy and selection of variants based on the activity of the high-temperature slip systems.etc. The results are compatible with high-temperature textures characteristic of a high stacking fault energy (HSFE)–like alloy and selection of variants based on the activity of the high-temperature slip systems.