Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves
Abstract 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 s...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2022-04-01
|
| Series: | Materials Theory |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s41313-022-00044-w |
| _version_ | 1811303032310202368 |
|---|---|
| author | Tero Mäkinen Markus Ovaska Lasse Laurson Mikko J. Alava |
| author_facet | Tero Mäkinen Markus Ovaska Lasse Laurson Mikko J. Alava |
| author_sort | Tero Mäkinen |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-04-13T07:39:42Z |
| format | Article |
| id | doaj.art-eb6e2cc709d249fca8436c4fe773d37f |
| institution | Directory Open Access Journal |
| issn | 2509-8012 |
| language | English |
| last_indexed | 2024-04-13T07:39:42Z |
| publishDate | 2022-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Materials Theory |
| spelling | doaj.art-eb6e2cc709d249fca8436c4fe773d37f2022-12-22T02:55:56ZengSpringerOpenMaterials Theory2509-80122022-04-016111210.1186/s41313-022-00044-wPortevin–Le Chatelier effect: modeling the deformation bands and stress-strain curvesTero Mäkinen0Markus Ovaska1Lasse Laurson2Mikko J. Alava3Department of Applied Physics, Aalto UniversityDepartment of Applied Physics, Aalto UniversityComputational Physics Laboratory, Tampere UniversityDepartment of Applied Physics, Aalto UniversityAbstract 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.https://doi.org/10.1186/s41313-022-00044-wPlastic instabilityDeformation bandsDynamic strain aging |
| spellingShingle | Tero Mäkinen Markus Ovaska Lasse Laurson Mikko J. Alava Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves Materials Theory Plastic instability Deformation bands Dynamic strain aging |
| title | Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves |
| title_full | Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves |
| title_fullStr | Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves |
| title_full_unstemmed | Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves |
| title_short | Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves |
| title_sort | portevin le chatelier effect modeling the deformation bands and stress strain curves |
| topic | Plastic instability Deformation bands Dynamic strain aging |
| url | https://doi.org/10.1186/s41313-022-00044-w |
| work_keys_str_mv | AT teromakinen portevinlechateliereffectmodelingthedeformationbandsandstressstraincurves AT markusovaska portevinlechateliereffectmodelingthedeformationbandsandstressstraincurves AT lasselaurson portevinlechateliereffectmodelingthedeformationbandsandstressstraincurves AT mikkojalava portevinlechateliereffectmodelingthedeformationbandsandstressstraincurves |