Production of In-situ Aluminum Matrix Composites through Addition of Metal Powders
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Accession number;05A0969962
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| Title;Production of In-situ Aluminum Matrix Composites through Addition of Metal Powders |
| Author;
MATSUMURO MITSUAKI
(Osaka Prefectural Industrial Technology Research Inst.)
KITSUDO TADASHI
(Osaka Prefectural Industrial Technology Research Inst.)
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Journal Title;Journal of Japan Foundry Engineering Society
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Journal Code:G0096A
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ISSN:1342-0429
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VOL.77;NO.11;PAGE.731-737(2005)
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| Figure&Table&Reference;FIG.14, TBL.2, REF.20 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;A new process was proposed to fabricate intermetallic compounds reinforced aluminum matrix composite by the reaction between metal powders and molten aluminum. Nickel powders were added gradually onto the surface of molten pure aluminum by stirring. Al3Ni particles which are smaller than the added nickel powder were in situ formed and dispersed homogeneously in the aluminum. The processing temperature was lower and the stirring time was shorter than those of the conventional vortex method for fabricating non-metal (Al2O3, SiC etc) reinforced aluminum matrix composites. The effects of processing variables, such as processing temperature, size of nickel powder, and stirring time, on the formation and dispersion behavior of Al3Ni were investigated. It was found that the size of Al3Ni decreased with decreasing processing temperature and stirring time. The process was also applied to Ti, Zr, Cr, Mo, W and Fe powders. Al3Ti, Al3Zr, Al7Cr and Al12Mo were formed and dispersed homogeneously, but the others failed. The size of intermetallic compounds depended considerably on the type of metal powder. The dispersion of intermetallic compounds was affected by the oxidation of metal powders. This process was applicable to JIS AC8A aluminum alloy for forming AC8A-Al3Ni composite. (author abst.) |
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