Modification of the primary silicon in hypereutectic Al-Si alloy by boron

Pang Jinhui; Cui Qingling; Wang Mingxing; Liu zhiyong; Liu Zhongxia; Song Tianfu

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Modification of the primary silicon in hypereutectic Al-Si alloy by boron
Issue S1, Pages: 140-142(2008)
Published： 2008 ，
DOI：

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[1]庞金辉,崔庆玲,王明星,刘志勇,刘忠侠,宋天福.B对过共晶Al-Si合金初晶Si的细化作用[J].特种铸造及有色合金,2008(S1):140-142.

Pang Jinhui, Cui Qingling, Wang Mingxing, et al. Modification of the primary silicon in hypereutectic Al-Si alloy by boron. [J]. Special Casting & Nonferrous Alloys (S1):140-142(2008)
[1]庞金辉,崔庆玲,王明星,刘志勇,刘忠侠,宋天福.B对过共晶Al-Si合金初晶Si的细化作用[J].特种铸造及有色合金,2008(S1):140-142. DOI：

Pang Jinhui, Cui Qingling, Wang Mingxing, et al. Modification of the primary silicon in hypereutectic Al-Si alloy by boron. [J]. Special Casting & Nonferrous Alloys (S1):140-142(2008) DOI：

摘要

研究了B对过共晶Al-20Si合金中初晶Si的细化作用。结果表明

B对过共晶Al-Si合金初晶Si有较好的变质效果。初晶Si的尺寸先随B含量的增加而减小

当B的添加量为0.065%时达到最佳的细化效果

之后初晶硅的尺寸开始随B含量的增加而增大。

Abstract

The modification of the primary silicon in hypereutectic Al-20wt.% Si alloy by boron has been investigated. The results show that boron addition can obviously modify the primary silicon in hypereutectic Al-20wt.% Si alloy. The size of the primary silicon decrease with the increase of boron addition content from 0 to 0.065 wt.%

and the minimum size of the primary silicon can be obtained at the boron addition content of 0.065 wt.%. But

the size of primary silicon increases if the boron addition content is continuously increased after the boron content of 0.065%