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RESEARCH PAPERS

Micromechanical Modeling of the Static Loading of an Al 359-SiC MMC

[+] Author and Article Information
M. S. Bruzzi, P. E. McHugh

Micromechanics Research Unit, Department of Mechanical Engineering, National University of Ireland, Galway, Ireland

J. Eng. Mater. Technol 127(1), 106-118 (Feb 22, 2005) (13 pages) doi:10.1115/1.1839217 History: Received April 14, 2004; Revised June 29, 2004; Online February 22, 2005
Copyright © 2005 by ASME
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References

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Figures

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Micrograph of clustered SiC and primary Si crystals within the microstructure of the Al 359+20% SiC. (Used with the permission of A. Forn, UPC, Spain)
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(a) 2D unit cell, containing a square reinforcing particle, with vertical and horizontal lines of symmetry; (b) one quadrant of the 2D unit cell: sufficient for modeling
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(a) Unit cell quadrant with idealized particle geometries and particle distribution for the Al 359 MMC 2D-Ideal Geometry model. (Light gray particle—SiC; dark gray particle—Si, hexagonal pore included.) (b) Unit cell quadrant with realistic particle geometries and particle distribution for the Al 359 MMC 2D-Real Geometry model. (Light gray particles—SiC, dark gray particles—Si, hexagonal pores included). (c) Unit cell octant with realistic particle geometries for the Al 359 MMC 3D-Real Geometry model
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Contour plot of equivalent plastic strain for the (a) 2D-Ideal Geometry and (b) 2D-Real Geometry models for the Al 359 MMC at room temperature with ε22ave=0.3%
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Macroscale engineering stress–strain curves for the Al 359 MMC models: (a) room temperature and (b) 150°C
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Contour plots, immediately after the quenching simulation, for the 2D-Real Geometry model: (a) hydrostatic pressure and (b) equivalent plastic strain
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Contour plots of equivalent plastic strain for the (a) 2D-Ideal Geometry and (b) 2D-Real Geometry Al 359 MMC models with ε22ave=0.3%
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Macroscale engineering stress–strain curves for Al 359 MMC models with the inclusion of residual stresses at (a) room temperature and (b) 150°C
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Contour plots of (a) hydrostatic pressure and (b) Gurson void volume fraction for the Al 359 MMC 2D-Real Geometry model at ε22ave=0.3%
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Effect of void growth damage on the macroscale engineering stress–strain curve for the Al 359 MMC 2D-Real Geometry model at room temperature
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Contour plots of the effective plastic strain for two of the SiC fracturing particles in the 2D-Real Geometry model, at strain levels of (a) 0.1%, (b) 0.2% and (c) 0.3%
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Contour plot of equivalent plastic strain for a quadrant of the 2D-Real Geometry model with pre-cracked particles
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Effects of particle fracture on the macroscale engineering stress–strain behavior of the 2D-Real Geometry model at room temperature

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