FE-BASED BULK AMORPHOUS ALLOYS WITH HIGH GLASS FORMING ABILITY

摘要

An iron-based bulk amorphous alloy having high glass forming ability is provided to easily manufacture a bulk amorphous alloy at a relatively low temperature by adding Fe of 60 atom percent or above in forming a bulk amorphous alloy. An iron-based bulk amorphous alloy having high glass forming ability contains Cr of 12 ± 0.1 atom percent, Mo of 2 ± 0.1 atom percent, Si of 1 ± 0.1 atom percent, Nb of 2 ± 0.1 atom percent, C of 2± 0.1 atom percent, B 2± 0.1 atom percent, P of 6 ± 0.1 atom percent, balance of Fe and impurity. In the alloy based on Fe, the compositions of Cr and Mo are fixed into 12 atom percent and 2 atom percent, respectively, Si and Nb maintain the compositions into 1 atom percent and 2 atom percent, respectively, and total content of C, B and P are controlled in a range of 10 to 21 atom percent.