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Effects of P Addition and Fading Time on the Primary Si Microstructure Changes of Hypereutectic Al-Si Alloy  

Park, Joo-Yul (The School of materials Science and Engineering, Ulsan University)
Kim, Eok-Soo (R&D Center, Dong Nam Precision Co., Ltd.)
Lee, Kwang-Hak (The School of materials Science and Engineering, Ulsan University)
Publication Information
Journal of Korea Foundry Society / v.24, no.2, 2004 , pp. 85-93 More about this Journal
Abstract
Mechanical property of hypereutectic Al-Si alloy is changed according to size and distribution of primary Si. Consequently, the study on the refinement for primary Si is progressed for a long time. But such effect of refinement comes out fading phenomena with the lapse of time. Therefore, this study investigated the optimum condition of primary Si refinement for hypereutectic Al-Si alloy. And we observed various primary Si size with P's fading phenomena. The experiment results were as follows. For experiment of primary Si refinement, we made hypereutectic Al-Si alloy with various amounts of P addition. As a result of experiment, we obtained the fine microstructure at 0.01wt.%P. And the optimum condition of P addition, for preventing from growth of primary Si by P fading, is estimated 0.1wt.%P.
Keywords
Hypereutectic Al-Si Alloy; Refinement; P Addition; Fading Time;
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1 S. Das, A. H. Yegneswaran and P. K. Rohatgi : J. Mat. Sci., 22 (1987) 3173-3180   DOI   ScienceOn
2 Adachi, M. : J. lpn. lnst. Light Met., 34 (1984) 430-435
3 G. K. Sigworth : AFS Trans., 82 (1987) 303-308
4 S.-B. Hahn, J.-H. Kim and B.-J. Ye : J. Kar. Foundrymen's Soc., 'Technical Lectures : Solidification of Al Alloys(3)Characteristics of Modification in the Hypereutectic AI-Si Alloys, 18 (1998) 498-505
5 H. Yamata, T. Tanaka and E. Okomu : J. lpn. Inst. Light Met, 37 (1987) 83-88   DOI
6 P.A. Tondel and L. Arnbery : The 3rd International Conference on Aluminium Alloys, 1 (1992) ]29-135
7 D.H. Joo and M.-H. Kim : J. Kar. Foundrymen's Soc., 'Refinement of Hypereutectic AI-Si Alloys by Phosphorous', 15 (1995) 449-458
8 J. L. Jorstad and E. V. Balackman : AFS Trans., 79 (1971) 85-92
9 K.-M. Kim, S.-W. Goh and E.-P. Yoon : Korean Journal of Materials Research, 'A Study on the Effects of Addition Elements on the refinement of Primary si Particles in Hypereutectic Al-Si Alloys', 5, (1995) 412-419
10 W. J. Jung, K. T. Kim and S. H. Kim : J. Kor. Foundrymen's Soc., 'Hypereutectic Aluminum Silicon Casting Alloys', 13 (1993) 17-24
11 J.H. Yoon : Thesis for a doctorate, University of Ulsan, 'A Study on the Microstructure Changes and Mechanical Characteristics with Modification in AlSi Alloy System for Application of Cast Forging Process', (2002)
12 S.-B. Hahn, J.-H. Kim, B.-S. You, W.-W. Park and B.-J. Ye: J. Kor. Foundrymen's Soc., 'Effect of Cooling Rate and the Amount of P Addition on the Refinement of Primary Si in Hypereutectic AI-Si Alloy', 17 (] 997) 347-355