C R Krenn 2004 Modelling Simul. Mater. Sci. Eng. 12 S415 doi:10.1088/0965-0393/12/4/S08
C R Krenn
Show affiliationsCharging many metal films or powders with hydrogen results in the growth of second-phase metal hydride particles. A large volume difference between hydride and metal can induce plastic deformation and result in a significant hysteresis upon removal of the hydrogen. For a palladium hydride system (with an 11% volume change), we estimate this hysteresis with calculations of the elastic and plastic works of multiple forward and reverse transformations using a two-dimensional finite-element model and find reasonable agreement between finite-element estimates and experimental observations. We also use a three-dimensional phase-field model to determine the effects of particle interactions, but for the isotropic dilation in the Pd/PdH system, these interactions do not apparently have a significant effect.
62.20.F- Deformation and plasticity
81.40.Lm Deformation, plasticity, and creep
02.70.Dh Finite-element and Galerkin methods
81.40.Jj Elasticity and anelasticity, stress-strain relations
Issue 4 (July 2004)
Received 30 August 2003
Published 10 June 2004
C R Krenn 2004 Modelling Simul. Mater. Sci. Eng. 12 S415
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