AN EXACT MODEL OF DC JOULE HEATING IN AMORPHOUS METALLIC RIBBONS

Authors
ALLIA P BARICCO M KNOBEL M TIBERTO P VINAI F
Citation
P. Allia et al., AN EXACT MODEL OF DC JOULE HEATING IN AMORPHOUS METALLIC RIBBONS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 179, 1994, pp. 361-365
Citations number
11
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
179
Year of publication
1994
Pages
361 - 365
Database
ISI
SICI code
0921-5093(1994)179:<361:AEMODJ>2.0.ZU;2-W
Abstract
A d.c. Joule heating technique allows new application-oriented crystal lization products to be obtained from amorphous metallic ribbons under controlled conditions. The structural changes occurring in a material are continuously monitored through on-line measurements of the electr ical resistance. Sample crystallization is often marked by a typical r esistance bump. A general solution of the equation describing the evol ution of the sample temperature and resistance in the course of d.c. J oule heating is found. The crystallization of Fe40Ni40B20, characteriz ed by a strong emission of heat, is treated in detail. Specific parame ters of the process are properly determined from a comparison with exp erimental results. The role of the transfer rate of the crystallizatio n heat to the sample is briefly discussed.