STUDY OF TEXTURE RELATED DEFECT STORAGE USING DIFFRACTION TECHNIQUES

RAÚL E. BOLMARO; MARTINA C. AVALOS; HEINZ G. BROKMEIER; EMANUEL A. BENATTI; NORBERT SCHELL; NATALIA S. DE VINCENTIS

Ciudad Autónoma de Buenos Aires

Congreso; I Congreso Argentino de Técnicas Neutrónicas TN2017; 2017

Comisión Nacional de Energía Atómica

n this work we study the height and shape of X-Ray Diffraction (XRD) peaks to relate the texture development and defect storage of an Interstitial Free steel (IF) and a F138 Stainless steel. The diffraction experiments were performed using synchrotron light in the Petra III station in DESY, Hamburg. The IF steel was cold rolled to a 75% reduction and exhibits the tyipical rolling texture with a gamma fiber and a alpha fiber. The Full Width Half Maximum (FWHM) of the diffraction peaks was used to assess the amount of defects of every crystal population, and was found that the gamma fiber tends to store most of the defects of the sample, while the alpha fiber is more or less clean of defects. The F138 sample was also cold rolled to a 70% reduction and shows a G/B(T) as a main component, while also showing a Goss and a weak Dillamore component. Both the Goss and the G/B(T) exhibit small number of defects, which seem to be stored in the neighboring components. This study was backed up by microstructure studies using Electron Backscatter Diffraction (EBSD) measurements.