Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves
Copyright policy )Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves
AbstractIn the Portevin–Le Chatelier (PLC) effect sample plastic deformation takes place via localized bands. We present a model to account for band dynamics and the variability the bands exhibit. The approach is tuned to account for strain hardening and the strain-rate dependence for the case of so-called type A (propagating) bands. The main experimental features of the fluctuations are a reduction with strain and increase with the strain rate which is reproduced by a model of plastic deformation with Dynamic Strain Aging, including disorder as a key parameter. Extensions are discussed as are the short-comings in reproducing detailed avalanche statistics.
- Tampere University Finland
- Department of Applied Physics Aalto University Finland
- Aalto University Finland
- National Centre for Nuclear Research Poland
- Aalto University
Dynamic strain aging, TA401-492, Deformation bands, 530, 114 Physical sciences, Materials of engineering and construction. Mechanics of materials, Plastic instability, 114, 620
Dynamic strain aging, TA401-492, Deformation bands, 530, 114 Physical sciences, Materials of engineering and construction. Mechanics of materials, Plastic instability, 114, 620
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