Abstract
Abstract High strength aluminum alloys have a face-centered cubic structure and it is not easy to form hydrides due to the extremely low solubility of hydrogen. Therefore, it is very difficult to test and characterize hydrogen in the high-strength aluminum alloys. In this work, the penetration of hydrogen and the distribution of hydrogen near the crack tip in the highstrength aluminum alloy were analyzed by time of flight secondary ion mass spectrometry (TOF-SIMS). Meanwhile, the test method of trace H in highstrength aluminum alloy was investigated by using TOF-SIMS technology.
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