Microwaves at the ISM frequency of 2450 and 5800 MHz have been exploited to prepare FeCoNiCrAl-family high entropy alloys by direct heating of pressed mixtures of metal powders. The aim of this work is to explore a new microwave assisted near-net-shape technology, using powder metallurgy approach for the preparation of high entropy alloys, able to overcome the limits of current melting technologies (defects formation) or solid state ones (time demanding). Results show that direct microwave heating of the powder precursors occurs, and further heating generation is favored by the ignition of exothermal reactions in the compound. Microwave processing, exploited both for the ignition and sustaining of such reactions, has been compared to reactive sintering in laboratory furnace and mechanical alloying in a planetary ball milling. Results demonstrate that microwave required the shortest time and lowest energy consumption, thus it is promising time- and cost-saving synthetic route.
http://hdl.handle.net/11380/1147310
Data di pubblicazione: | 2015 |
Titolo: | Microwave processing of high entropy alloys: A powder metallurgy approach |
Autori: | Veronesi, Paolo; Rosa, Roberto; Colombini, Elena; Leonelli, Cristina; Garuti, M. |
Autori: | |
Data del convegno: | 14-17 September 2015 |
Nome del convegno: | 15th International Conference on Microwave and High Frequency Heating, AMPERE 2015 |
Luogo del convegno: | Krakow, Poland |
Titolo del libro: | AMPERE 2015 - 15th International Conference on Microwave and High Frequency Heating |
Pagina iniziale: | 87 |
Pagina finale: | 87 |
Appare nelle tipologie: | Relazione in Atti di Convegno |
File in questo prodotto:
File | Descrizione | Tipologia | Licenza | |
---|---|---|---|---|
Ampere2015.pdf | Versione editoriale | Administrator Richiedi una copia |

I documenti presenti in Iris Unimore sono rilasciati con licenza Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia, salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris