MICROSTRUCTURAL EVOLUTION AND MECHANICAL PROPERTIES ON AN ARB PROCESSED IF STEEL STUDIED BY X-RAY DIFFRACTION AND EBSD.

F. CRUZ GANDARILLA; A. SALCEDO GARRIDO; T. BAUDIN; N. DE VINCENTIS; H. MENDOZA LEON; J. CABAÑAS-MORENO; R. BOLMARO; A. SALCEDO GARRIDO; N. DE VINCENTIS; M. AVALOS; H. MENDOZA LEON; R. BOLMARO; M. AVALOS; F. CRUZ GANDARILLA; T. BAUDIN; J. CABAÑAS-MORENO

MATERIALS CHARACTERIZATION

ELSEVIER SCIENCE INC

Lugar: Amsterdam; Año: 2016 vol. 118 p. 332 - 339

1044-5803

Accumulative Roll Bonding (ARB) is one of the so-called severe plastic deformation (SPD) processes, allowing theproduction of metals and alloys with ultrafine (micro-nano) structures. Materials with ultrafine grains presentattractive properties like the simultaneous increase in strength and ductility. Our interest in these materials is focusedon their microstructural evolution during ARB processing, eventually responsible for the enhancement ofthose mechanical properties.In the current work we follow the evolution of the microstructure in an interstitial-free (IF) steel deformed byARB after consecutive processing cycles, by means of Electron BackScatter Diffraction (EBSD) and X-ray diffraction(XRD). Particularly, we present results related to texture, grain (GS) and domain sizes, grain boundary character,density of Geometrically Necessary Dislocations (GND), Grain Orientation Spread (GOS), latticeparameters, microstrain, dislocation density and their spatial arrangement.After 5 ARB cycles the system shows a microstructure constituted mainly by submicrometric grains with highangle boundaries and low presence of dislocations inside the grains.