Effect of clustering on particle pushing and solidification behaviour in TiB2 reinforced aluminium PMMCs

Y. M. Youssef; R. J. Dashwood; P. D. Lee

doi:10.1016/j.compositesa.2004.10.027

Effect of clustering on particle pushing and solidification behaviour in TiB2 reinforced aluminium PMMCs

Y. M. Youssef, R. J. Dashwood, P. D. Lee

Research output: Contribution to journal › Article › peer-review

Abstract

The behaviour of titanium diboride particles in molten aluminium was investigated by conducting casting experiments at different cooling rates and particle addition levels, starting with a master alloy containing in situ formed TiB2 particles. The particle pushing/engulfment phenomena and particle clustering effects were studied for two matrix alloy systems, commercial purity (CP) aluminium and an Al-4% Mg (A514) alloy. The critical velocity, which is the solidification velocity below which the particles are pushed and above which they are engulfed, was calculated. The results were validated against the predictions of the models available in the literature. The assumptions, limitations and comparative success of the different models were discussed. The critical velocity observed in CP-Al ranged between 4 and 8 μm/s at low particulate concentration (

Original language	English
Pages (from-to)	747-763
Number of pages	16
Journal	Composites Part A: Applied Science and Manufacturing
Volume	36
Issue number	6
DOIs	https://doi.org/10.1016/j.compositesa.2004.10.027
Publication status	Published - Jun 2005

Keywords

A. Metal-matrix composites (MMCs)
A. Particle reinforcement
Particle pushing

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10.1016/j.compositesa.2004.10.027

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title = "Effect of clustering on particle pushing and solidification behaviour in TiB2 reinforced aluminium PMMCs",

abstract = "The behaviour of titanium diboride particles in molten aluminium was investigated by conducting casting experiments at different cooling rates and particle addition levels, starting with a master alloy containing in situ formed TiB2 particles. The particle pushing/engulfment phenomena and particle clustering effects were studied for two matrix alloy systems, commercial purity (CP) aluminium and an Al-4% Mg (A514) alloy. The critical velocity, which is the solidification velocity below which the particles are pushed and above which they are engulfed, was calculated. The results were validated against the predictions of the models available in the literature. The assumptions, limitations and comparative success of the different models were discussed. The critical velocity observed in CP-Al ranged between 4 and 8 μm/s at low particulate concentration (",

keywords = "A. Metal-matrix composites (MMCs), A. Particle reinforcement, Particle pushing",

author = "Youssef, {Y. M.} and Dashwood, {R. J.} and Lee, {P. D.}",

year = "2005",

month = jun,

doi = "10.1016/j.compositesa.2004.10.027",

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journal = "Composites Part A: Applied Science and Manufacturing",

issn = "1878-5840",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Effect of clustering on particle pushing and solidification behaviour in TiB2 reinforced aluminium PMMCs

AU - Youssef, Y. M.

AU - Dashwood, R. J.

AU - Lee, P. D.

PY - 2005/6

Y1 - 2005/6

N2 - The behaviour of titanium diboride particles in molten aluminium was investigated by conducting casting experiments at different cooling rates and particle addition levels, starting with a master alloy containing in situ formed TiB2 particles. The particle pushing/engulfment phenomena and particle clustering effects were studied for two matrix alloy systems, commercial purity (CP) aluminium and an Al-4% Mg (A514) alloy. The critical velocity, which is the solidification velocity below which the particles are pushed and above which they are engulfed, was calculated. The results were validated against the predictions of the models available in the literature. The assumptions, limitations and comparative success of the different models were discussed. The critical velocity observed in CP-Al ranged between 4 and 8 μm/s at low particulate concentration (

AB - The behaviour of titanium diboride particles in molten aluminium was investigated by conducting casting experiments at different cooling rates and particle addition levels, starting with a master alloy containing in situ formed TiB2 particles. The particle pushing/engulfment phenomena and particle clustering effects were studied for two matrix alloy systems, commercial purity (CP) aluminium and an Al-4% Mg (A514) alloy. The critical velocity, which is the solidification velocity below which the particles are pushed and above which they are engulfed, was calculated. The results were validated against the predictions of the models available in the literature. The assumptions, limitations and comparative success of the different models were discussed. The critical velocity observed in CP-Al ranged between 4 and 8 μm/s at low particulate concentration (

KW - A. Metal-matrix composites (MMCs)

KW - A. Particle reinforcement

KW - Particle pushing

U2 - 10.1016/j.compositesa.2004.10.027

DO - 10.1016/j.compositesa.2004.10.027

M3 - Article

SN - 1878-5840

VL - 36

SP - 747

EP - 763

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

IS - 6

ER -

Effect of clustering on particle pushing and solidification behaviour in TiB2 reinforced aluminium PMMCs

Abstract

Keywords

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