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Keywords: diffusion
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Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2009, 131(4): 041404.
Published Online: July 1, 2009
... of the pipeline materials, we simulate hydrogen diffusion through the surfaces of an axial crack on the internal wall of a vessel coupled with material deformation under plane strain small scale yielding conditions. The calculation of the hydrogen accumulation ahead of the crack tip accounts for stress-driven...
Journal Articles
Article Type: Research Papers
J. Pressure Vessel Technol. August 2008, 130(3): 031404.
Published Online: June 11, 2008
... reaches around 10 μ m . Finally, cracklike cavities coalesce with each other to form one microcrack along a grain boundary. It can be concluded that cavity growth rates are controlled by diffusion and power law creep under constrained conditions, based on the theoretical consideration of cavity growth...