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The characterisation of microstructural changes in rapidly solidified Al–Fe alloys through measurement of their electrical resistance

  • Milan Bizjak , Ladislav Kosec , Albert C. Kneissl and Borut Kosec
Published/Copyright: June 11, 2013

Abstract

Microstructural changes of rapidly solidified Al alloy ribbons of various thicknesses and containing different concentrations of iron were analysed. The kinetics and sequence of microstructural changes occurring at a constant heating rate were analysed through the measurement of electrical resistance. This method allowed detection of the transition between metastable and stable phases of rapidly solidified Al – Fe alloy ribbons with various concentrations of iron and various thicknesses. After determining the temperature regions throughout the heating cycle, the quenched microstructure was analysed at transition points using both optical and transmission electron microscopy. Precipitation is the most common reaction for these types of alloys, and the most important alloy formed is Al13Fe4.


* Correspondence address, Prof. Dr. Milan Bizjak, University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerceva c. 12, 1000 Ljubljana, Slowenia, Tel.: +386 1 470 4500, Fax: +386 1 470 4560, E-mail:

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Received: 2006-10-16
Accepted: 2007-4-26
Published Online: 2013-06-11
Published in Print: 2008-01-01

© 2008, Carl Hanser Verlag, München

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