caa a22 4500 463227778 CHVBK 20180405153232.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10853-007-2050-7 doi (NATIONALLICENCE)springer-10.1007/s10853-007-2050-7 Control of solidified structures in aluminum-silicon alloys by high magnetic fields [Elektronische Daten] [Qiang Wang, Chun-jiang Wang, Tie Liu, Kai Wang, Ji-cheng He] In order to investigate the effects of high magnetic fields on the as-solidified structures of Al alloys, solidification experiments of hypoeutectic and hypereutectic Al-Si alloys under various high magnetic field conditions (up to 12T) have been conducted. It was found that uniform magnetic fields and gradient magnetic fields affect the solidification process by Lorentz force and magnetization force, respectively. The primary silicon crystals of hypereutectic Al-Si alloys are distributed, relatively, homogeneously under uniform magnetic fields, whereas they congregate near the top surface or bottom of samples by the combined action of buoyancy and magnetization force under gradient magnetic fields. The results indicate that it is possible to control the behaviors of reinforced particles in the metal matrix and improve the material performances by using high magnetic fields in the solidification process of metal matrix composites. The experiments also showed that high magnetic fields decrease the interlamellar spacing of the eutectic structure, while there exists a certain optimum value of magnetic intensity corresponding to the minimum value of interlamellar spacing, and magnetic energy is capable of influencing thermodynamic equilibrium of solidifying system and makes the content of eutectic aluminum in eutectic structures increased. Springer Science+Business Media, LLC, 2007 Wang Qiang Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut Wang Chun-jiang Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut Liu Tie Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut Wang Kai Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut He Ji-cheng Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10000-10006 0022-2461 42:24<10000 2007 42 10853 https://doi.org/10.1007/s10853-007-2050-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-2050-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Qiang Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Wang Chun-jiang Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Liu Tie Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut NATIONALLICENCE 700 1- Wang Kai Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut NATIONALLICENCE 700 1- He Ji-cheng Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, 110004, Shenyang, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/24(2007-12-01), 10000-10006 0022-2461 42:24<10000 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer