International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
Relationship Between Fatigue Crack Growth Behavior and Susceptibility to Hydrogen Embrittlement in 7000 Series Aluminum Alloys
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The 7000 series alloys have the highest strength in the aluminum alloys, but lower fatigue properties than 2000 series alloys. Thus, 7000 series alloys are not applied to a large proportion of the aircraft components. However, the mechanism for this has not been elucidated yet. In humid air, hydrogen embrittlement based on intergranular cracking has been known to occur in 7000 series alloys. In order to explain the difference in the fatigue crack growth behavior in the two series alloys, the effect of the test environment on the fatigue crack growth of the two series alloys has been investigated in...