A linear elastic fracture mechanics approach provides an explanation for titanium alloy a cleavage at small angles as well as normal to the principal stress axis. However, the complexity of the total fracture process can prevent this approach from giving the correct ranking of stress corrosion susceptibility in different orientations of strongly textured materials. Stress corrosion crack profiles in such a material indicate that a diffusing species (hydrogen) controls the location and initiation of cleavage fracture.
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