材料研究学报  2004, Vol. 18 Issue (6): 568-576

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利用强磁场控制过共晶铝硅合金的凝固组织

王强;王春江;庞雪君;赫冀成

东北大学

Control of solidified structures of Al--Si hypereutectic alloy by using intense magnetic fields

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东北大学

王强; 王春江; 庞雪君; 赫冀成 . 利用强磁场控制过共晶铝硅合金的凝固组织[J]. 材料研究学报, 2004, 18(6): 568-576.
, , , . Control of solidified structures of Al--Si hypereutectic alloy by using intense magnetic fields[J]. Chin J Mater Res, 2004, 18(6): 568-576.

摘要 参考文献 相关文章 Metrics 全文: PDF(5128 KB)   摘要: 研究了静磁场和梯度磁场的强度和方向对Al--15.7\%Si合金宏观和微观凝固组织的影响. 结果表明, 在不同的磁场条件下, 从过共晶合金中析出的初晶硅粒的分布状况和共晶硅的形态和 密度有显著不同. 通过改变磁感应强度和磁场梯度的大小和 方向可有效控制初晶硅的分布; 合理控制强磁场的操作参数可达到细化铝硅共晶体的目的. 强磁场的磁化力和洛伦兹力通过控制初晶硅颗粒迁移行为来改变其在合金基体中的分布状态, 通过影响凝固过程中的对流现象改变合金的凝固组织. 关键词 ： 金属材料,  金属基复合材料,  强磁场,  Al-Si合金     Abstract：The changes of the macro- and micro- solidified structures of Al--15.7\%Si hypereutectic alloy were examined under various experimental conditions, and the influences of static and gradient magnetic fields with different amplitude and direction on the structures were investigated in details. It is found that not only the distribution of the primary crystal silicon but the structures and density of silicon framework of eutectic are different because of different magnetic parameters. The changes of the primary crystals distribution is due to the action of the Lorentz and magnetization forces caused by intense magnetic fields on the migratory behaviors of Si particles in the alloy matrix; and the forces can also change the convection phenomena during solidification to affect the solidified structures of alloy. The results indicate that it is possible to control the behaviors of reinforced particles in the metal matrix by using intense magnetic fields in the solidification process of metal matrix composites. Key words： metallic materials    metal matrix composite    high magnetic field    Al-Si alloy    solidification process 收稿日期: 2004-12-29      ZTFLH:  TB331   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 王强 王春江 庞雪君 赫冀成 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2004/V18/I6/568 1 T.Yamane, Y.Masugata, K.Hirao, Light Metals, 36(2), 819(1986) (山根寿己,舛形芳树,平尾桂一,轻金属,36(2),819(1986)) 2 K.Song, H.Nakae, Journal of Japan Foundry Engineering Society, 68(2), 148(1996) (宋基敬,中江英雄,铸造工学,68(2),148(1996)) 3 A.Kamio, Journal of Japan Foundry Engineering Society, 68(12), 1075(1996) (神尾彰彦,铸造工学,68(12),1075(1996)) 4 G.Arakane, S.Takamori, Y.Ohsawa, A.Sato, J. Japan Inst. 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