Estudo dos processos de solidificação rápida melt-spinning e inrowasp na amorfização de ligas à base de ferro.

Abstract

The process of rapid solidification Melt-Spinning and Inrowasp (In Rotating Water Spinning Process) were used in obtaining alloys with amorphous structures in ribbon and wire shapes in the follow compositions on atomic content Fe75Siio(Bi.xCx)i5 with the x varying from 0 to 0,8, by a rate of 0,2. The ribbons obtaneid as a resulting product from the Melt-Spinning process, were structurely characterized by X-Ray Difraction and Diferencial Thermal Analysis (DTA) in order to study the thermal stability. The wires obtaneid from Inrowasp process, were tested by the 180° bending test, which was used as a selective type test, characterizing the wire ductility. Using the Melt-Spinning process, it was possible to obtain 38,89% of ductile ribbons within a total number of 36 tests, while the inrowasp process revealed ductile wires only in 11,76% within a total number of 85 tests.