Abstract
This paper deals with the review on the formation, thermal stability and magnetic properties of the Fe-based bulk glassy alloys in as-cast bulk and melt-spun ribbon forms. A large supercooled liquid region over 50 K before crystallization was obtained in Fe–(Al, Ga)–(P, C, B, Si), Fe–(Cr, Mo, Nb)–(Al, Ga)–(P, C, B) and (Fe, Co, Ni)–Zr–M–B (M=Ti, Hf, V, Nb, Ta, Cr, Mo and W) systems and bulk glassy alloys were produced in a thickness range below 2 mm for the Fe–(Al, Ga)–(P, C, B, Si) system and 6 mm for the Fe–Co–(Zr, Nb, Ta)–(Mo, W)-B system by copper-mold casting. The ring-shaped glassy Fe–(Al, Ga)–(P, C, B, Si) alloys exhibit much better soft magnetic properties as compared with the ring-shaped alloy made from the melt-spun ribbon because of the formation of the unique domain structure. The good combination of high glass-forming ability and good soft magnetic properties indicates the possibility of future development as a new bulk glassy magnetic material.
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