Hydrogen Absorption in Aluminum Alloy Melt

Gao Yuan; Zhang Henghua; Gong Zhireng; Fan Shengkang

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Hydrogen Absorption in Aluminum Alloy Melt
Vol. 29, Issue 1, Pages: 85-87(2009)
Published： 2009 ，
DOI：

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[1]高原,张恒华,龚致礽,范圣康.铝合金熔体吸氢特性的研究[J].特种铸造及有色合金,2009,29(01):85-87+1+16.

Gao Yuan, Zhang Henghua, Gong Zhireng, et al. Hydrogen Absorption in Aluminum Alloy Melt. [J]. Special Casting & Nonferrous Alloys 29(1):85-87(2009)
[1]高原,张恒华,龚致礽,范圣康.铝合金熔体吸氢特性的研究[J].特种铸造及有色合金,2009,29(01):85-87+1+16. DOI：

Gao Yuan, Zhang Henghua, Gong Zhireng, et al. Hydrogen Absorption in Aluminum Alloy Melt. [J]. Special Casting & Nonferrous Alloys 29(1):85-87(2009) DOI：

摘要

运用减压凝固法

研究了环境湿度和浇注温度对铝合金熔体中氢含量的影响。试验结果显示

环境湿度一定时

浇注温度越高

熔液氢含量越高;浇注温度一定时

环境湿度越高

熔液氢含量越高。同时根据相关理论估算出对应环境湿度和温度下的氢分压

然后结合试验结果得到实际氢分压

从而得出氢气进入熔液的比例（即溶氢率）;此外

根据试验结果拟合得出A356熔体中氢含量公式为lgCB=-4817/T+2.946+1/2lgPH2

并对该公式的有效性进行讨论。

Abstract

Effects of environmental humidity and pouring temperature on the hydrogen absorption in aluminum melt were examined by pressure-reduction solidification method. The results show that with a given humidity

hydrogen content in aluminum melt is increased with increasing in temperature

while with a given pouring temperature

hydrogen content is increased with increasing in humidity also. Theoretical hydrogen partial pressure was estimated by means of relative theory with a fixed environmental humidity and pouring temperature

which was comparatively analyze with actual hydrogen partial pressure from experiment

obtaining the ratio of hydrogen to the aluminum melt.