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《Special Casting & Nonferrous Alloys》 2003-01
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Influence of the RE on the P Modified Hypereutectic Al-Si Alloy

Ouyang Zhiying Mao Xiemin Tang Duoguang Zhang Jinlong Wang Haijiang Hou Xu(Shanghai University, Shanghai, China)  
The effects of La-RE on the morphology and size of Si in P modified Al-18Si alloy were examined. The results showed that La-RE can enhance P modified effect. Addition of both La-RE and P can not only refine the primary Si but also modify eutectic Si. Moreover, the coarsening tendency of P-La RE modified primary Si in hypereutectic Al-Si alloy was weakened significantly and the modification fading can be extended for 6 h longer. The distribution of La-RE in the alloy was determined by SEM. The mechanism of La-RE effects on P modification was analyzed and approached.
【Fund】: 国家自然科学基金资助项目 (50 0 750 51 )
【CateGory Index】: TG292
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