Abstract
In highly strengthened Al-Zn-Mg alloys, stress corrosion cracking (SCC) is prone to take place. It is thought that the crack growth mechanism in the SCC is hydrogen embrittlement. To elucidate the mechanism for the hydrogen embrittlement, it is effective to charge the metallic specimen with a large amount of hydrogen and to investigate tensile properties of the specimen. There are cathode electrolytic charging method and plasma charging method as some methods to charge hydrogen. Plasma charging method is reported to introduce a larger amount of hydrogen. However, there are only a few reports on this method. In this study, we investigated tensile properties of plasma-hydrogen-charged Al-Zn-Mg and Al-Cu-Mg alloys by slow strain rate technique.
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