DEFORMATION ANALYSIS ON F138 AUSTENITIC STAINLESS STEEL USING DIFFRACTION PEAK BROADENING ANALYSIS AND EBSD

N. S. DE VINCENTIS; M. C. AVALOS; A. KLIAUGA; M. FERRANTE; R.E. BOLMARO

JOINVILLE

Congreso; XX Congresso Brasileiro de Engehneria e Ciencia dos Materiais CBECiMat; 2012

The analysis of a material that is meant to be used in a certain application needs to combine information at different scales, including bulk properties together with a local study of the materials? microstructure. In this work there were used two different techniques that allowed obtaining complementary information on the microstructural changes developed by an F138 steel bar subjected to ECAE and cold rolling. The diffraction peak broadening analysis was conducted through Williamson-Hall and CMWP methods, which allowed obtaining bulk scale information on domain sizes, dislocation and stacking fault densities. This study was complemented with EBSD analysis in an SEM microscope, which provided high resolution information on relatively large areas of the polished surfaces of the material (~m2). The results obtained with both techniques showed good correlation for each sample with growing deformation or annealing steps.