Učinak druge faze topologije čestica pri početnoj temperaturi abnormalnog rasta zrna kod Fe – 3% Si čelika

The relations between regimes of dynamic annealing, state of secondary particles system and the onset temperature of abnormal grain growth are investigated. Two distinguish types of Fe-3%Si grain-oriented steels, after one and two stage cold rolling, were studied. The second phase particles remain unaffected in first type of steel during the heat treatment. Vice versa, the increased density of second phases was observed after annealing in the second type of the investigated materials. It is shown that start/onset of abnormal grain growth strongly depends on both volume fraction of second phase particles and annealing temperature. Texture and magnetic properties of the investigated samples are investigated within the current study.Istraživani su odnosi između režima dinamičkog žarenja, stanja sustava sekundarnih čestica i početne temperature abnormalnog rasta zrna. Analizirane su dvije različite vrste Fe-3%Si zrnato usmjerenih čelika, nakon prve i druge faze hladnog valjanja. Čestice druge faze ostaju nepromijenjene kod prve vrste čelika tijekom toplinske obrade. Obrnuto, uočena je povećana gustoća u drugoj fazi nakon žarenja kod druge vrste ispitanih materijala. Prikazano je da početak abnormalnog rasta zrna uvelike ovisi i o opsegu čestica druge faze i o temperaturi žarenja. Ova analiza istražuje teksturu i magnetska svojstva ispitanih uzoraka