Metalurgija, Vol. 54 No. 4, 2015.
Izvorni znanstveni članak
Analysis of microstructure and microtexture in grain-oriented electrical steel (GOES) during manufacturing process
A. Volodarskaja
; VŠB - Technical University of Ostrava, FMME, Ostrava, Czech Republic
V. Vodárek
; VŠB - Technical University of Ostrava, FMME, Ostrava, Czech Republic
J. Holešinský
; VŠB - Technical University of Ostrava, FMME, Ostrava, Czech Republic
Š. Miklušová
; ArcelorMittal Frýdek-Místek, Frýdek-Místek, Czech Republic
O. Žáček
; ArcelorMittal Frýdek-Místek, Frýdek-Místek, Czech Republic
Sažetak
The final Goss texture in grain-oriented electrical steels (GOES) is affected by microstructure evolution and inheritance during the whole production process. This paper presents the results of detailed microtexture and microstructure investigations on GOES after the basic steps of the industrial AlN + Cu manufacturing process: hot rolling, first cold rolling + decarburization annealing, second cold rolling and final high temperature annealing. Microstructure studies showed that a copper addition to GOES affected solubility of sulphides. Copper rich sulphides dissolved during hot rolling and re-precipitated during decarburization annealing. An intensive precipitation of AlN and Si3N4 took place during decarburization annealing. No ε - Cu precipitation was detected. After high temperature annealing the misorientation of individual grains reached up to 8°.
Ključne riječi
GOES; microtexture; precipitation processes; Electron backscatter diffraction; Transmission electron microscopy
Hrčak ID:
138054
URI
Datum izdavanja:
1.10.2015.
Posjeta: 1.975 *