• Schiopu, Adriana-Gabriela

Abstract

<jats:p> Our research focuses on the microstructure and mechanical properties of S6-5-2 speed steel. Studying austenite transformation in martensite and chemical composition changes of high speed steel, under heating conditions for austenitisation and cooling in oil bath, both performed under sub-atmospheric pressure (in rarefied atmospheres) is experimentally determined. The fields were these alloys can be preferred are: the electrical machines for avionics, the magnetic circuits of ultra-rapid relays and of other devices working in DC fields, the measure transformers and other transformers supplied on industrial frequency. To analyze microstructure�s modifications a combination of optical, scanning and electron microscopy was used. The mechanical properties were measured by hardness tests. </jats:p>

Topics

• impedance spectroscopy
• microstructure
• hardness
• chemical composition
• electron microscopy
• high speed steel