The mechanical stirring of A356-2.5 vol.% SiCp liquid was conducted in a cylindrical crucible by a straight-blade stirrer. The radial distribution of SiC particles in A356 liquid was studied under the conditions of 25 deg. for gradient angle α of blade and 10 mm/s for speed of moving up and down of stirrer, The results show that there exists a nonlinear relationship between rotating speed of stirrer and radial relative deviation of SiCp content in A356 liquid between the center and the periphery of crucible. The greater the rotating speed of stirrer is, the bigger the radial relative deviation of SiCp content in A356 liquid becomes and the more nonhomogeneous the radial distribution of SiC particles in A356 liquid turns. In addition, when the rotating speed of stirrer is about 200 r/min, the vertical distribution of SiC particles in A356 liquid is relative uniform. It can be seen that the nonhomogeneous distribution of SiC particles in A356 liquid results from the nonhomogeneous radial distribution of SiC particles in A356 liquid in straight-blade mechanical stirring ultimately.
参考文献
| [1] | S. Kumar;V. Balasubramanian .Effect of reinforcement size and volume fraction on the abrasive wear behaviour of AA7075 Al/SiC_p P/M composites - A statistical analysis[J].Tribology International,2010(1/2):414-422. |
| [2] | S.M.R. Mousavi Abarghouie;S.M. Seyed Reihani .Investigation of friction and wear behaviors of 2024 Al and 2024 Al/SiCp composite at elevated temperatures[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(2):326-332. |
| [3] | D. Bozic .Influence of SiC particles distribution on mechanical properties and fracture of DRA alloys[J].Materials & design,2010(1):134-141. |
| [4] | D.P. Mondal;S. Das;K.S. Suresh;N. Ramakrishnan .Compressive deformation behaviour of coarse SiC particle reinforced composite: Effect of age-hardening and SiC content[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):550-560. |
| [5] | B. Dutta;I. Samajdar;M. K. Surappa .Particle redistribution and matrix microstructure evolution during hot extrusion of cast SiCp reinforced aluminium alloy matrix composites[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1998(1):36-46. |
| [6] | S. Naher;D. Brabazon;L. Looney .Development and assessment of a new quick quench stir caster design for the production of metal matrix composites[J].Journal of Materials Processing Technology,2005(3):430-439. |
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