Simulation of the stir casting process

By S. Naher, Dermot Brabazon, L. Looney. 2003

192 citations recorded by the source corpus.

Abstract Non-homogeneous particle distribution is one of the greatest problems in casting metal matrix composites (MMCs). To optimise some of the parameters for uniform particle distribution for batch compocasting the present simulation studies were conducted. The simulation involves visualisation experiments. In the visualisation experiments liquid and semisolid aluminium are replaced by other fluids with similar characteristics. SiC reinforcement particulate similar to that used in aluminium MMCs was used in the simulation fluid mixtures. Scaled-up stirring experiments were carried out in a transparent crucible with the percentage of reinforcement material being varied. Optimum conditions for photographing flow patterns were established. The dependence of the photography conditions (shutter speed, aperture control, lighting), particles dispersion and settling times and vortex height on stirrer geometry and speed was found. Results are discussed in terms of their applicability to MMC production.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/42cb9ea1d5a29abdacb76a43ea091ab813f093a5

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Citations in the corpus

Wettability in Metal Matrix Composites (2021, background): “It was seen that a rapid solidification may retain the particle locations in the bulk composites [79].”
The Key Attributes of Synthesizing Ceramic Particulate Reinforced Al-Based Matrix Composites through Stir Casting Process: A Review (2013, background): “Some of these drawbacks are agglomeration and sedimentation of the ceramic particles, ceramic particulate fracture during mechanical agitation and local solidification of the melt [30, 50, 51].”
Prediction of influence of process parameters on tensile strength of AA6061/TiC aluminum matrix composites produced using stir casting (2016, methodology): “Similar observations were reported in the literatures by NAHER et al [27] and RAVI et al [30].”
Processing of advanced Al/SiC particulate metal matrix composites under intensive shearing – A novel Rheo-process (2009, background): “This can be attributed to the pushing of the particles by the solidification front and is in accordance with various previous studies [13,21,39–41].”
Processing issues, machining, and applications of aluminum metal matrix composites (2018, methodology): “, preheating temperature of reinforcement material,([26]) solidification rate,([23]) position of impeller,([43]) impeller diameter,([27]) reinforcement particle size,([33]) reinforcement amount,([19]) type of reinforcement,([63]) melting temperature of matrix material,([33]) stirring time,([1]) and ”