BULK NICKEL-IRON-BASED, NICKEL-COBALT-BASED AND NICKEL-COPPER BASED GLASSES BEARING CHROMIUM, NIOBIUM, PHOSPHORUS AND BORON

摘要

Ni—Fe, Ni—Co, and Ni—Cu-based bulk metallic glass forming alloys are provided. The alloys have critical rod diameters of at least 1 mm and in some instances at least 11 mm. The alloys have composition according to Ni_{(100-a-b-c-d-e)}X_aCr_bNb_cP_dB_e, wherein X is at least one of Fe, Co, and Cu, the atomic percent X (Fe and/or Co and/or Cu) ranges from 0.5 to 30, the atomic percent of Cr ranges from 2 to 15, the atomic percent of Nb ranges from 1 to 5, the atomic percent of P ranges from 14 to 19, the atomic percent of B ranges from 1 to 5, and the balance is Ni.