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Fabrication of Al/AlN composites by in situ reaction

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Abstract

The tensile properties and microstructures of various Al alloys fabricated by the pressureless infiltration method under a nitrogen atmosphere were examined. The spontaneous infiltration of molten metal into the powder bed occurred at 800 °C for 1 h under a nitrogen atmosphere. As a result, it was possible to fabricate Al alloys reinforced with AlN particles formed by in situ reaction. A significant strengthening even in the control alloy occurred due to the formation of in situ AlN particle even without an addition of artificial reinforcement. Strength values of the control alloy were increased with decreasing Al powders in bottom powders bed. In addition, tensile strength in Al–Mg alloys was increased with Mg content.

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Acknowledgment

This work was supported by Kookmin University Research Fund, 2005.

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Authors and Affiliations

  1. School of Advanced Materials Engineering, Kookmin University, Seoul, 136-702, Korea

    K. B. Lee, H. S. Sim & H. Kwon

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  1. K. B. Lee
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  2. H. S. Sim
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  3. H. Kwon
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Correspondence to H. Kwon.

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Lee, K.B., Sim, H.S. & Kwon, H. Fabrication of Al/AlN composites by in situ reaction. J Mater Sci 41, 6347–6352 (2006). https://doi.org/10.1007/s10853-006-0711-6

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  • DOI: https://doi.org/10.1007/s10853-006-0711-6

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