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Vol.46, No.6, 382 ~ 390, 2008
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| Title |
| LES Method Modeling and Fabrication of Al-TiB2 Composite by In-situ Melt Mixing Process |
| 박정수 Jung Su Park , 김종훈 Jong Hoon Kim , 하만영 Man Young Ha , 박봉규 Bong Kyu Park , 박용호 Yong Ho Park , 박익민 Ik Min Park |
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| Abstract |
| To manufacture Al MMCs, in-situ melt mixing process is used because it is free from contamination, and it makes reinforcements homogeneously dispersed. Large eddy simulation method is used to find the optimum melt mixing condition. At the Re 3000, the most suitable mixing is occurred between Al-Ti and Al-B melts. The in-situ formed TiB2 particles has the size varying from 40 nm to 130 nm, due to the increase of cooling rate, and exhibits a homogeneous dispersion. And the interface between reinforcement and matrix is clean. Both hardness and Young`s modulus of this composite are improved with increasing the cooling rate. |
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| Key Words |
| Melt mixing process, Al-TiB2 composite, Large eddy simulation |
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