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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials; 20060704-08; Vancouver(CA) >Behavior of Hydrogen in AI-4Mg Alloys during Heat Treatment
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Behavior of Hydrogen in AI-4Mg Alloys during Heat Treatment

机译：热处理过程中AI-4％Mg合金中氢的行为

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摘要

The effect of the annealing atmosphere, the annealing temperature etc. on the hydrogen behavior in several Al-4% Mg alloys during heat treatment, was investigated. The results have shown that the hydrogen content in the as-cast slab is uniform, while the hydrogen content in the slab tends to be higher near the surface than in the interior after annealing. Such a tendency becomes more marked when annealing time is prolonged and Si and Fe content is lowered. The condensation of hydrogen near the surface can be seen only when it is annealed in a wet atmosphere. When annealed in a dry atmosphere, the hydrogen content near the surface becomes lower than in the center of the specimen. The hydrogen in Al-Mg alloys tends to be released to outside intrinsically at temperatures around 400℃ and above. It is revealed that oxide film formed on the surface prevents the hydrogen from being released to outside.
机译：研究了退火气氛，退火温度等对几种Al-4％Mg合金在热处理过程中氢行为的影响。结果表明，铸态板坯中的氢含量是均匀的，而退火后，板坯中的氢含量趋于比表面内部的氢含量高。当延长退火时间并且降低Si和Fe含量时，这种趋势变得更加明显。仅当在潮湿气氛中进行退火时，才能看到氢在表面附近的凝结。在干燥气氛中退火时，表面附近的氢含量变得低于样品中心的氢含量。 Al-Mg合金中的氢在400℃左右或更高的温度下会固有地释放到外部。揭示了在表面上形成的氧化膜防止氢释放到外部。

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