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Effect of solidification rate on spatial distribution of SiC particles in A356 alloy composites
Date
2008-08-26
Author
CETIN, Arda
Kalkanlı, Ali
Metadata
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The damage and deformation behaviour of particulate reinforced metal matrix composites (PMMCs) can be highly sensitive to local variations in spatial distribution of reinforcement particles, which markedly depend on melt processing and solidification stages during production of PMMCs. The present paper attempts to study the effect of solidification rate on cluster formation in an Al-Si-Mg (A356) alloy composite reinforced with SiC particles and to explore the applicability of spatial functions to PMMC microstructures to quantify the degree of clustering The observed amount of clustering in composites was evaulated with the nearest neighbour and local density statistics in terms of variations in dendrite arm spacings and solid fractions at the dendrite coherencies. The results indicate that the distribution of SiC particles is controlled by the secondary dendrite arms. Depending on dendrite arm spacings and particle content, clustering is most pronounced at distance scales ranging approximately between 150 and 500 mu m, which is much larger as compared to the nearest neighbour distances.
Subject Keywords
Modelling and Simulation
,
Industrial and Manufacturing Engineering
,
Metals and Alloys
,
Ceramics and Composites
,
Computer Science Applications
URI
https://hdl.handle.net/11511/47413
Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
DOI
https://doi.org/10.1016/j.jmatprotec.2007.11.065
Collections
Department of Metallurgical and Materials Engineering, Article
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A. CETIN and A. Kalkanlı, “Effect of solidification rate on spatial distribution of SiC particles in A356 alloy composites,”
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
, pp. 1–8, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47413.