Effects of Alloying Element Mg,Si on Hydrogen Content in Aluminum Melt and Ar Degassing Efficiency

Li Yunliang1; Cen Kun1; Wang Fang1; Yu Huanwei1; Wang Mingxing1

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Effects of Alloying Element Mg,Si on Hydrogen Content in Aluminum Melt and Ar Degassing Efficiency
Issue 12, Pages: 971-973(2007)
Published： 2007 ，
DOI：

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[1]李云良,岑昆,王芳,余焕伟,王明星.Mg、Si对Al熔体中氢含量及氩气除气效果的影响[J].特种铸造及有色合金,2007(12):971-973+901-902.

Li Yunliang1, Cen Kun1, Wang Fang1, et al. Effects of Alloying Element Mg,Si on Hydrogen Content in Aluminum Melt and Ar Degassing Efficiency. [J]. Special Casting & Nonferrous Alloys (12):971-973(2007)
[1]李云良,岑昆,王芳,余焕伟,王明星.Mg、Si对Al熔体中氢含量及氩气除气效果的影响[J].特种铸造及有色合金,2007(12):971-973+901-902. DOI：

Li Yunliang1, Cen Kun1, Wang Fang1, et al. Effects of Alloying Element Mg,Si on Hydrogen Content in Aluminum Melt and Ar Degassing Efficiency. [J]. Special Casting & Nonferrous Alloys (12):971-973(2007) DOI：

摘要

研究了合金元素Mg、Si对Al熔体中的氢含量及氩气除气效果的影响。结果表明

Mg、Si元素均明显增强了Al熔体的吸气倾向。在Mg元素单独存在时

熔体中的氢含量随Mg含量的增加而上升

氩气除气效果也逐渐明显

但除气后

熔体中的氢含量仍较高;Si的加入能阻碍Al熔体中的氢原子向氩气气泡的扩散

因而

明显降低了氩气除气的效果;Mg、Si元素共存不仅增加了铝合金熔体的吸氢倾向

而且增加了除气的难度

但短时间除气仍有一定效果。

Abstract

Effects of alloying element Mg

Si on hydrogen content in aluminum melt and Ar degassing efficiency were examined.It was found that the both Mg and Si element can remarkably enhance the gas-absorbing tendency of aluminum melt.When Mg element exists in the aluminum melt alone

the hydrogen content in aluminum melt is increased with the increase of Mg content

and Ar degassing efficiency becomes clear gradually.However

the hydrogen content in aluminum melt is higher after Ar degassing.Si addition can obviously decrease the Ar degassing efficiency due to restraining the diffusion of H atom into Ar bubble.The co-existence of Mg and Si elements can not only strengthen the absorbing hydrogen tendency in aluminum melt

but also rise the difficulty of Ar degassing.Even so

a short time Ar degassing still has some effects.