Al Effect on the Structure of the Spray Formed Fe_(88)Si_(12) (at) Alloy

摘要

Fe-Si alloys have excellent soft magnetic properties, specially around 12 at% Si. However, its industrial application is limited because of the lack of ductility, which causes cracking during rolling operations for the fabrication of thin sheets. The reason of the brittleness of the high silicon alloys is a disorder/order reaction at low temperatures. The aim of this work is to analyze the effect of the addition of Aluminum on the crystalline structure of Fe-Si alloys. Samples with a chemical composition of Fe_(88)Si_(12) and Fe_(87)Si_(12)Al_1 (at%) were prepared by Spray Forming. The structure was studied by means of X-ray diffraction and Mossbauer Spectroscopy. The presence of the DO3 and a- Fe phases were observed