Influence of Al addition on the thermal stability and mechanical properties of fe 76.5-xcu 1si 13.5b 9Al x Amorphous Alloys

Abstract

This paper fabricated Fe 76.5-xCu 1Si 13.5B 9Al x (x=0,1,2,3,5,7 at.%) amorphous ribbons using singleroller melt-spinning method. The effect of Al content on the thermal stability and mechanical properties was investigated. The results indicated that Al addition have little effect on the amorphous formation ability of the alloys. On the other hand, increasing the Al content can substantially increase T x2, which corresponds to the crystallization of Fe borides. Nanoindentation tests indicated that hardness of the alloys increase slightly with increasing the Al content, and Young's modulus has a complicated relationship with the Al content.