Hydrogen Activation Behavior of Commercial Magnesium Processed by Different Severe Plastic Deformation Routes
Severe plastic deformation (SPD) techniques are being considered as low cost processing routes for Mg alloys, aiming hydrogen storage applications. The main objective is to develop air-resistant materials, with lower specific surface area in comparison with ball-milled powders, but with still attractive H-sorption kinetics associated to the microstructural refinement. In this study, the effects of different SPD processing routes (high-pressure torsion, extensive cold rolling and cold forging) in the hydrogen activation behavior of Mg was evaluated. The results show that both microstructural and textural aspects should be controlled during SPD processing to obtain Mg alloys with good H-sorption properties and enhanced activation kinetics.
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
D. R. Leiva et al., "Hydrogen Activation Behavior of Commercial Magnesium Processed by Different Severe Plastic Deformation Routes", Materials Science Forum, Vols. 667-669, pp. 1047-1051, 2011