Analysis of microstructure and microtexture in grain-oriented electrical steel (GOES) during manufacturing process

摘要

The final Goss texture in grain-oriented electrical steels (GOES) is affected by microstructure evolution and inheritanceduring the whole production process. This paper presents the results of detailed microtexture and microstructureinvestigations on GOES after the basic steps of the industrial AlN + Cu manufacturing process: hot rolling, firstcold rolling + decarburization annealing, second cold rolling and final high temperature annealing. Microstructurestudies showed that a copper addition to GOES affected solubility of sulphides. Copper rich sulphides dissolvedduring hot rolling and re-precipitated during decarburization annealing. An intensive precipitation of AlN and Si3N4took place during decarburization annealing. No  - Cu precipitation was detected. After high temperature annealingthe misorientation of individual grains reached up to 8°.