Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles
Joint Authors
Schvezov, Carlos E.
Ares, Alicia E.
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-30
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The present work is focused on the study of the effect of directional heat extraction on the silicon-carbide (SiC) distribution in zinc-aluminum matrix composites (MMCs) and on the columnar-to-equiaxed (CET) position in directionally solidified samples.
To this end, a ZA-27 alloy matrix was reinforced with ceramic particles of SiC and vertically directionally solidified.
The cooling rates, temperature gradients, and interphase velocities were then measured, and their influence on the solidification microstructure of the MMCs was analyzed.
The recalescence detected and measured during the equiaxed transition was of the order of 3.5°C to 1.1°C.
The values of the temperature gradients reached a minimum during the CET and were even negative in most cases (between −3.89 K and 0.06 K).
The interphase velocities varied between 0.07 mm/s and 0.44 mm/s at the transition.
Also, the presence of ceramic particles in ZA-27 alloys affected the thermodynamic local conditions and the kinetics of nucleation, producing a finer microstructure.
American Psychological Association (APA)
Ares, Alicia E.& Schvezov, Carlos E.. 2013. Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles. Journal of Metallurgy،Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-486396
Modern Language Association (MLA)
Ares, Alicia E.& Schvezov, Carlos E.. Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles. Journal of Metallurgy No. 2013 (2013), pp.1-12.
https://search.emarefa.net/detail/BIM-486396
American Medical Association (AMA)
Ares, Alicia E.& Schvezov, Carlos E.. Columnar-to-Equiaxed Transition in Metal-Matrix Composites Reinforced with Silicon Carbide Particles. Journal of Metallurgy. 2013. Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-486396
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-486396