The stress-strain assisted hydrogen diffusion in metals under variable loading was concerned as a key element of elucidation of hydrogen embrittlement. The suitability of simplified treatments of hydrogen diffusion in notched solids under monotonic loading was addressed comparing various one-dimensional and two-dimensional modelling approaches with the purpose to assess if generated approximate solutions could provide acceptable results along the diffusion depth towards prospective rupture sites, so that quite more expensive simulations may be eluded. For different geometry-and-loading cases, respective time-depth domains were revealed where certain simplified procedures could be fairly suitable to carry out calculations of metal hydrogenation for the purposes of hydrogen embrittlement analysis and control, while the choice of the optimum strategy for the stress-strain assisted diffusion simulations in notched members was case- and purpose-dependent.

Optimization of the Simulation of Stress-Assisted Hydrogen Diffusion for Studies of Hydrogen Embrittlement of Notched Bars. J.Toribio, V.Kharin, D.Vergara, M.Lorenzo: Materials Science, 2011, 46[6], 819-33