Assessing the Power of Electron Back Scattering Diffraction Characterization of Deformed F-138 Steel from the View Point of Crystal Diffraction

BOLMARO, RAÚL E.; M. C. AVALOS; NATALIA DE VINCENTIS; A.M. KLIAUGA; H.-G. BROKMEIER

PRAKTISCHE METALLOGRAPHIE

CARL HANSER VERLAG

Lugar: Berlin, Germany; Año: 2014 vol. 51 p. 634 - 655

0032-678X

Microstructural characterization by combined EBSD and X-ray diffraction analysis is shown for an FCC material deformed by rolling and further heat treatment on air. The wide variety of x-rays sources combined with EBSD allows some correlations between microstructural parameters tobe withdrawn by carefully analyzing x-ray peak broadening. The combination of both techniques provides a deeper understanding of anisotropic accumulation of dislocation arrays on a deformed F 138 stainless steel. The anisotropy results in a smaller peak breadth for crystal orientations with [110] planes contained on the rolling plane, further explained as resulting from a lower storage of dislocations. After heat treatment the effect is reverted and the formerly less misoriented orientations become more uniformly oriented revealing a faster dislocation migration and annihilation and/or trapping