Abstract
Microstructure of rapidly solidified melt-spun ribbons in Fe-M-Si-B (M=Cu, Ag, Sn) immiscible alloys were investigated focusing on an amorphous phase formation and the difference in microstructure between Fe-Cu-based and Fe-Ag-based alloys. Amorphous phase was formed in melt-spun ribbon of Fe-Cu-Si-B and Fe-Ag-Si-B alloys, while a Fe-Sn-Si-B alloy shows low glass forming ability resulting in the formation of a crystalline melt-spun ribbon.
