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Acta Metall Sin  2007, Vol. 43 Issue (3): 327-331     DOI:
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PLASTIC DEFORMATION OF METALLIC MEMBRANE INDUCED BY HYDROGEN PERMEATION
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. PLASTIC DEFORMATION OF METALLIC MEMBRANE INDUCED BY HYDROGEN PERMEATION. Acta Metall Sin, 2007, 43(3): 327-331 .

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Abstract  An elastoplastic self-stress model for hydrogen diffusion across a metallic tube is established. This model includes the elastic, plastic and residual stresses developed during hydrogen insertion into metallic membranes. It is found that the hydrogen diffusion slows down in the plastic region and local thermodynamic properties of metal-hydrogen system are modified at the same time. The plastic stress can be avoided by using small charging current during hydrogen charging processes.
Key words:  hydrogen permeation membrane      palladium alloy      self-stress      plastic stress      
Received:  27 June 2006     
ZTFLH:  TG146  
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