Archivio Istituzionale della RicercaInternal friction and dynamic Young's modulus versus temperature were measured in Fe73.5Cu1Nb3Si13.5B9 melt-spun ribbons as-prepared or after being submitted to Joule-heating treatments or to furnace annealing during isothermal modulus measurements. In Joule-heated samples the resistance was measured continuously during the heating treatments. Changes in the resistivity reflecting changes in the microstructure were correlated with room-temperature measurements of the magnetic permeability and the Delta E effect. The experimental results are discussed with specific reference to the microstructural evolution of the annealed ribbons from the initial amorphous phase to the nanocrystalline phase. A strong enhancement of the Delta E effect was found in Joule-heated ribbons just before the nanocrystalline phase formed.
Elastic behaviour and structural evolution of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 produced by thermal ageing or joule-heating / E., Bonetti; L., Delbianco; Allia, PAOLO MARIA EUGENIO ICILIO; P., Tiberto; F., Vinai. - In: PHYSICA. B, CONDENSED MATTER. - ISSN 0921-4526. - 225:(1996), pp. 94-102. [10.1016/0921-4526(96)00237-2]
Elastic behaviour and structural evolution of nanocrystalline Fe73.5Cu1Nb3Si13.5B9 produced by thermal ageing or joule-heating
ALLIA, PAOLO MARIA EUGENIO ICILIO;
1996
Abstract
Internal friction and dynamic Young's modulus versus temperature were measured in Fe73.5Cu1Nb3Si13.5B9 melt-spun ribbons as-prepared or after being submitted to Joule-heating treatments or to furnace annealing during isothermal modulus measurements. In Joule-heated samples the resistance was measured continuously during the heating treatments. Changes in the resistivity reflecting changes in the microstructure were correlated with room-temperature measurements of the magnetic permeability and the Delta E effect. The experimental results are discussed with specific reference to the microstructural evolution of the annealed ribbons from the initial amorphous phase to the nanocrystalline phase. A strong enhancement of the Delta E effect was found in Joule-heated ribbons just before the nanocrystalline phase formed.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2498103
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo