The fracture characteristics of hydrogen embrittlement (HE) in three binary Ti-Al alloys (2.5, 5, and 8 wt % Al) were investigated using electron fractography and X-ray diffraction. The deformation characteristics of HE in these three alloys were also studied using thin foil transmission electron microscopy. A comparison was made between the HE and the stress corrosion cracking (SCC) fracture characteristics of these alloys. The similarities observed in SCC and HE failure in Ti-5 and 8 Al alloys strongly support the contention that hydrogen plays a significant role in the SCC process.

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© 1973 National Association of Corrosion Engineers
1973
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