3%珪素熱延鋼板におけるGoss集合組織の形成機構

抄録

A formation mechanism of Goss texture in 3% silicon steel hot band has been studied using a slip rotation theory of a single crystal proposed by the author. At first an orientation change during cold rolling has been predicted by this theory in the midplane of the single crystal with the initial orientation having <110> axis parallel to the transverse direction of rolling. Experimental results obtained here have supported this prediction. Then a new kind of stress in the vicinity of the sheet surface during hot rolling has been assumed by adding a friction stress between roll and sheet surface to the stress used in the above prediction of the orientation change in the midplane. The formation and the stability of Goss orientation during hot rolling have been explained using this theory and this new kind of simple stress as a phenomenon in the vicinity of the surface of single crystal sheet with the orientation of <110> //TD. At the same time this theory has suggested the stability and the formation of {112} <111> orientation besides Goss orientation in the surface layer of hot band.