Particle Size versus Grain Size Relation in the Sprayformed Al-18Si Composites

Title
Particle Size versus Grain Size Relation in the Sprayformed Al-18Si Composites
Authors
석현광박경원이재철
Keywords
hypereutectic Al-Si-X composites; microstructure evolution; spray forming
Issue Date
2009-08
Publisher
Metals and Materials International
Citation
VOL 15, NO 4, 609-613
Abstract
Various hypereutectic Al-18Si-X composites with different average Si particle sizes ranging from 0.2~30 μm were produced by varying process parameters of spray forming. The effect of the Si particle size in determining the matrix grain size was investigated in order to design the optimum process for producing hypereutectic Al-18Si-X composites with fine microstructures. The experimental results suggested that the Si particle size greater than 2 μm is desirable for retarding the grain coarsening during subsequent forming processes, resulting in the fine microstructure. The observed results on the coarsening behavior of grains during spray-forming were analyzed from the free energy viewpoint.
URI
http://pubs.kist.re.kr/handle/201004/35854
ISSN
1598-9623
Appears in Collections:
KIST Publication > Article
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