Fabrication of Al alloys reinforced with AlN particles formed byin-situ reaction |
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Authors: | Kon Bae Lee Ho Seop Sim Sung Woo Heo Soo Youn Cho Hoon Kwon |
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Affiliation: | (1) School of Advanced Materials Engineering, Kookmin University, Seoul, 136-702, Korea; |
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Abstract: | The tensile properties and microstructures of Al alloys reinforced with AlN particles formed byin-situ reaction under a nitrogen atmosphere were analyzed. It was found that AlN particle layers formed on the surface of the Al
particles in the powder bed, which replaced the Mg3N2 coated layers through the reaction, Mg3N2+2A1 → 2AlN+3Mg. The tensile strength and 0.2% offset yield strength in the control alloys were significantly greater than
those in commercial alloys. This increase was due to the fine AlN particles formed by the abovein-situ reactions of the Mg3N2 formation and its decomposition into AlN.
This article is based on a presentation made in the symposium “The lst KIM-JIM Joint Symposium: High Strength Ratio Aluminum Alloys”, held at Inha University, Inchon, Korea, October 22, 1999 under
the auspices of The Korean Institute of Metals and Materials and The Japanese Institute of Metals. |
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Keywords: | in-situ reaction pressureless infiltration AlN Mg3N2 |
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