TY - JOUR
T1 - Influence of reinforcements on solidification microstructure and fatigue properties of cast aluminum alloy composites
AU - Miyahara, Hirofumi
AU - Maruno, Yusaku
AU - Nishihata, Yoshinori
AU - Ogi, Keisaku
PY - 2006/4
Y1 - 2006/4
N2 - Influences of reinforcements on crystal growth of matrix alloy in cast composites were investigated, and an advantage of reinforcements on rotating bending fatigue belabor were examined. In the composite specimens, the alpha dendrite is deformed during solidification, and the eutectic structure is distributed around fibers. The solutal diffusion field around dendrite tip governs the tip undercooling. The fatigue strength of composites specimens is influenced by the cluster of reinforcement particles rather than the matrix structure. The clusters of particles introduce the cracks but also interrupt the crack propagation. Therefore, reinforcement particles eventually better the fatigue properties of notched specimens.
AB - Influences of reinforcements on crystal growth of matrix alloy in cast composites were investigated, and an advantage of reinforcements on rotating bending fatigue belabor were examined. In the composite specimens, the alpha dendrite is deformed during solidification, and the eutectic structure is distributed around fibers. The solutal diffusion field around dendrite tip governs the tip undercooling. The fatigue strength of composites specimens is influenced by the cluster of reinforcement particles rather than the matrix structure. The clusters of particles introduce the cracks but also interrupt the crack propagation. Therefore, reinforcement particles eventually better the fatigue properties of notched specimens.
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M3 - Article
AN - SCOPUS:33749358922
SN - 0972-2815
VL - 59
SP - 255
EP - 261
JO - Transactions of the Indian Institute of Metals
JF - Transactions of the Indian Institute of Metals
IS - 2
ER -