Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves

Tero Mäkinen, Markus Ovaska, Lasse Laurson, Mikko J. Alava

Tutkimustuotos: ArtikkeliTieteellinenvertaisarvioitu

7 Lataukset (Pure)

Abstrakti

In 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.
AlkuperäiskieliEnglanti
Artikkeli15
Sivumäärä12
JulkaisuMaterials Theory
Vuosikerta6
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 2022
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Julkaisufoorumi-taso

  • Jufo-taso 1

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