International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions
5 Hydrogen Effects on the Brittleness Transition in BCC Iron
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Recent works on small scales affecting the ductility of single crystal silicon are making an impact on the studies of other brittle materials. At the atomistic and mesoscopic levels, the basic building blocks of plasticity and fracture, as controlled by activation volumes and activation energies, are being used to predict the brittle to ductile transition (DBTT). A unique opportunity produced a first order prediction of how such a transition might be affected by hydrogen in body-centered cubic iron structures. A model derived from observations and analysis of silicon fracture is applied and modified to account for observations of the fracture...