Distribution Behavior of B and P during Al-Si Melt Directional Solidification with Open-Ended Crucible-Reference-Cited by-同舟云学术

Distribution Behavior of B and P during Al-Si Melt Directional Solidification with Open-Ended Crucible

Published:2018-03-26 Issue:3 Volume:37 Page:201-208
ISSN:0334-6455
Container-title:High Temperature Materials and Processes
language:
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Author:

Bai Xiaolong¹²,Ban Boyuan²,Li Jingwei²,Peng Zhijian²,Chen Jian²

Affiliation:

1. School of Engineering and Technology, China University of Geosciences, Beijing100083, China

2. Key Laboratory of Novel Thin Film Solar Cells, Institute of Applied Technology, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei230031, China

Abstract

AbstractDistribution behavior of B and P during directional solidification of Al-20Si, Al-30Si and Al-40Si alloys has been investigated. Macrostructure of the Al-Si alloy ingots and concentration profile of elements B and P reveal that the elements segregate to eutectic Al-Si melt during growth of primary Si flakes, and P gradually segregates to the top of the ingots during directional solidification. An apparent segregation coefficient, ka, is introduced to describe the segregation behavior of B and P between the primary Si and the Al-Si melt and compared with thermodynamic theoretical equilibrium coefficients. The apparent segregation coefficients of B and P decrease with increase of solidification temperature.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.degruyter.com/downloadpdf/journals/htmp/37/3/article-p201.xml

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