Synthesis of Fe-based bulk metallic glasses with low purity materials by multi-metalloids addition

Abstract

Bulk metallic glasses (BMGs) Fe 61Co 7Zr 10Mo 5W 2 M (15+ X) ( X=0, 0.15, 0.30, 0.45, 0.60, 0.75 and 1.2) (M contains B, Al, Si, C and P) were prepared with low purity of raw materials by copper mould cast. X-ray diffraction and differential thermal analyzer results show that the glass forming ability (GFA) as well as the thermal stability of the Fe-based alloy made from low purity raw materials can be much improved by adding small amount of multi-metalloids. The positive effect of metalloids addition on the formation of the bulk metallic glasses is discussed.