Abstract
The aim of this study was to characterize microstructures and mechanical properties of aluminum metal matrix composites (MMC’s) prepared by powder metallurgy method. Consolidation of mixed powder with gas atomized Al-Si/SiCp powder and Al-14Si-2.5Cu-0.5Mg powder by hot pressing was classified according to sintering temperature and sintering time. Sintering condition was optimized using tensile properties of sintered specimens. Ultimate tensile strength of the optimized sintered specimen was 228 MPa with an elongation of 5.3% in longitudinal direction. In addition, wear properties and behaviors of the sintered aluminum-based MMC’s were analyzed in accordance with vertical load and linear speed. As the linear speed and vertical load of the wear increased, change of the wear behavior occurred in order of oxidation of Al-Si matrix, formation of C-rich layer, Fe-alloying to matrix, and melting of the specimen
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Acknowledgment
This study was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) through GCRC-SOP (No. 2011-0030658)
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Bang, J., Oak, JJ. & Park, Y.H. Fabrication and Analysis of the Wear Properties of Hot-Pressed Al-Si/SiCp + Al-Si-Cu-Mg Metal Matrix Composite. J. of Materi Eng and Perform 25, 102–115 (2016). https://doi.org/10.1007/s11665-015-1827-0
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DOI: https://doi.org/10.1007/s11665-015-1827-0