Examples of typical “quasiplastic” deformation diagrams for a glass material are shown in attached Fig. It should be noted they are the deformation diagrams of the glass without any additives as a matrix, a glue at the interfaces, etc. The glass is associated with brittleness by most people. I think that investigation of transformation mechanisms of a brittle material into the quasi-plastic ones without changing the chemical and phase composition is very important to overcome the brittleness of materials as a whole.
I do not fully understand your question. Hydrogen embrittlement is related to metals (specifically to steel), while your question is related (silicate?) glass. Or metal glass? Please formulate your question more clearly.
Brittleness is inherent for many materials. It dos not due to the chemical nature of the material. The mechanical cause of brittleness is the stresses concentration due to the absence of mutual inelastic shear mechanisms for load-bearing elements in the structure of the material. I would like to draw the attention of the project participants, that the best way to overcome the brittleness of material is realized in biological structural materials. I believe that the radical way to overcome hydrogen embrittlement is to give the structure of the material mechanical signs of biological structural materials.
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