A statistical, physical-based, micro-mechanical model of hydrogen-induced intergranular fracture in steel

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Hydrogen embrittlement controlled by reaction of dislocation with grain boundary in alpha-iron (2018, background): “…of materials remain a subject of debate (Gerberich, 2012; Kirchheim, 2010; Li et al., 2015; Li et al., 2017; Lynch, 2011; Nagumo, 2016; Neeraj et al., 2012; Novak et al., 2010; Robertson et al., 2012; Robertson et al., 2015; Shibata et al., 2017; Song and Curtin, 2013, 2014; Xie et al., 2016).”
Strain gradient plasticity-based modeling of hydrogen environment assisted cracking (2016, background): “ip [24,25]. This difference is important because HEDE defines cracking as the balance between local tensile stress and H-concentration-reduced interface strength [8] (or reducedtotal work of fracture [14,15]). Crack tip H concentration increases exponentially with rising hydrostatic stress [28,29], ”
Recent advances on hydrogen embrittlement of structural materials (2015, methodology): “Figure 12 shows the prediction of the fracture model for the failure of the 4340 steel as a function of initial lattice hydrogen concentration (Novak et al. 2010).”