Physical parameters related to the developments of recrystallization textures in an ultra low carbon steel

✍ Scribed by I Samajdar; B Verlinden; L Kestens; P Van Houtte

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 824 KB
• Volume: 47
• Category: Article
• ISSN: 1359-6454
• DOI: 10.1016/s1359-6454(98)00337-1

✦ Synopsis

AbstractÐDevelopments in deformation and recrystallization textures were studied in cold-rolled (50±90% reduction) ultra low carbon (ULC) steel using X-ray texture measurements and orientation imaging microscopy (OIM). During deformation, g-®bre (ND//h111i) increased between 0 and 50% reduction but then did not change signi®cantly, while a-®bre (RD//h110i) increased progressively from 0 to 90% reduction. After complete recrystallization, however, a steady increase in g and almost no changes in a were observed with increasing strain. Developments in recrystallization textures were attributed to two parameters: (1) spacings (l i , as measured along the normal direction, ND, where i can be a speci®c component of a/g-®bres) of the a/g deformed bands; and (2) their relative ability to form recrystallized grains. While l i was determined by the deformation texture and the thicknesses of the deformed grains/bands and naturally decreased with increasing strain, estimations of parameter (2) were obtained from the so-called nucleation factors (N i , de®ned as the number of recrystallized i grains per i bandÐas measured/estimated along the ND). At higher strains, noticeable drops in the N i s of a-®bre were observed. Two plausible causes for such drops were increased stored energy advantages for g bands and orientation pinning in some of the a regions.