Page 106 - The Effect of Hydrogen and Hydrides - ebook first test
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Figure 4-39: Optical micrographs viewed along the specimens’ face normal direction of the out-of-plane (also called radial) hydrides
⁄
in a double-edged notched “plane-strain" specimen showing, (a) variation of stress biaxiality ratio ( 2 1 ) across the
gauge section; (b) out-of-plane hydrides visible in the uniaxial tensile region near the notch where the major principal
⁄
stress exceeds 155 MPa (c) transition from in-plane to out-of-plane hydrides at 2 1 > 0.5 occurring at major
principal stress of 110 MPa.The red arrows in (b) and (c) show the orientation of the major principal stress direction at
the locations indicated (from [Cinbiz et al., 2016]).
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