Fig.4-14 Hydrogen partitioning and spontaneous cracking
(a) Various defect structures in aluminum alloy; (b) hydrogen partitioning at various defect sites; and (c) binding energy per atom and interfacial cohesive energy as a function of occupancy. Spontaneous cleavage occurred when the concentration of hydrogen atoms reached 22.7 H atoms/nm2, according to the negative value of the cohesive energy.
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