期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 623, 期 -, 页码 36-41出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.10.095
关键词
Segregation; Immiscible alloys; In-situ quenching; Microstructure; High magnetic fields
资金
- National Science Foundation of China [50974085, 51034010]
- Science and Technology Commission of Shanghai Municipality [13JC1402500]
- Development Foundation for Talents in Shanghai [2009046]
- National High-tech R&D Program of China [2009AA03Z109]
Compositions located in the metastable miscibility gap of BiZn immiscible alloy was investigated under the effect of high static magnetic field (HSMF). BiZn immiscible alloys with uniformly distribution of solid particles in the matrix were obtained under HSMF with 29 T. It is found that the solid Bi particles were uniformly distributed in the matrix because of complete suppression of Stokes sedimentation under the effect of HSMF with 29 T. Slight segregation caused by Marangoni migration still remained at the edge of ingot solidified under 29 T. Segregation in the alloys solidified under 0 T, 1 T and 6 T was mainly owning to Stokes sedimentation, but that solidified under 17.4 T and 29 T was controlled by nucleation, growth and Marangoni migration processes of liquid droplets. The segregation mechanism under the effects of HSMF was discussed. (C) 2014 Elsevier B.V. All rights reserved.
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