Light Metals 2014 2014
DOI: 10.1002/9781118888438.ch227
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Understanding the Role of Nanodispersions on the Properties of A390 Hyper‐Eutectic Al‐Si Cast Alloy

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Cited by 2 publications
(2 citation statements)
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“…The addition of nanoparticles promotes the formation of α-Al phase and has been attributed to the improved nucleation of Si particles and depletion of Si element near the Si particles [19,33]. This would produce a deterioration effect on the wear resistance of the hypo-eutectic alloys, whereas the effect would be less significant on the hyper-eutectic alloys, since the morphology of the Si particles and the shape of the α-Al, as well as the morphology of the eutectic Si have a major contribution.…”
Section: Wear Test Resultsmentioning
confidence: 99%
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“…The addition of nanoparticles promotes the formation of α-Al phase and has been attributed to the improved nucleation of Si particles and depletion of Si element near the Si particles [19,33]. This would produce a deterioration effect on the wear resistance of the hypo-eutectic alloys, whereas the effect would be less significant on the hyper-eutectic alloys, since the morphology of the Si particles and the shape of the α-Al, as well as the morphology of the eutectic Si have a major contribution.…”
Section: Wear Test Resultsmentioning
confidence: 99%
“…This would produce a deterioration effect on the wear resistance of the hypo-eutectic alloys, whereas the effect would be less significant on the hyper-eutectic alloys, since the morphology of the Si particles and the shape of the α-Al, as well as the morphology of the eutectic Si have a major contribution. It has been stated [19,33] that the cracks easily initiate inside the brittle primary Si or eutectic Si, and then propagate through boundaries with α-Al phase, thus the change in the Si morphology (according to restricted nucleation and growth theory of modification), and the crystalline appearance of the α-Al phase would improve the wear resistance for the hyper-eutectic alloys [33]. Also, the addition of nanoparticles to the hypereutectic alloys has been shown to produce a refining effect on the primary silicon particles, which has been attributed to increasing the nucleation sites [19] or inducing a thermal sub-cooling effect.…”
Section: Wear Test Resultsmentioning
confidence: 99%