Effects of Al-3B on Grain Refinement of Hypoeutectic Al-Si Alloy

Ding Chao; Liu Yuan; Li Yanxiang

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Effects of Al-3B on Grain Refinement of Hypoeutectic Al-Si Alloy
Vol. 30, Issue 5, Pages: 465-468(2010)
Published： 2010 ，
DOI：

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[1]丁超,刘源,李言祥.Al-3B对亚共晶Al-Si合金的晶粒细化作用[J].特种铸造及有色合金,2010,30(05):465-468+390.

Ding Chao, Liu Yuan, Li Yanxiang. Effects of Al-3B on Grain Refinement of Hypoeutectic Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 30(5):465-468(2010)
[1]丁超,刘源,李言祥.Al-3B对亚共晶Al-Si合金的晶粒细化作用[J].特种铸造及有色合金,2010,30(05):465-468+390. DOI：

Ding Chao, Liu Yuan, Li Yanxiang. Effects of Al-3B on Grain Refinement of Hypoeutectic Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 30(5):465-468(2010) DOI：

摘要

从热分析角度研究Al-3B对Al-7Si的晶粒细化作用

B对Al-7Si晶粒细化的最佳加入量为0.03%。考察了Al-3B对不同Si含量亚共晶铝硅合金的晶粒细化作用

B对高硅含量亚共晶铝硅合金的晶粒细化效果更好。分析了B对亚共晶铝硅合金的细化机理

认为Al-B共晶理论可以有效解释试验现象。

Abstract

Effects of Al-3B master alloy on grain refinement of Al-7Si alloy were analyzed by thermodynamics theory.It is found that the desirable refinement effects on Al-7Si alloy can be observed with 0.03% B addition.In addition

effects of Al-3B master alloy on grain refinement of hypoeutectic Al-Si alloy with varied Si content were approached.The results reveal that B exhibits the better refinement effects on grain size in hypoeutectic Al-Si alloy with high Si content.Refining mechanism of B on grain size in the hypoeutectic Al-Si alloy was described by Al-B eutectic theory.