期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 115, 期 -, 页码 56-70出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2018.11.009
关键词
thermodynamics; Dislocations; Copper; Torsion test; Size effect
资金
- Chinese Government Scholarship Program
The thermodynamic dislocation theory developed for non-uniform plastic deformations is used for the analysis of twisted copper wires. With a small set of physical parameters, assumed to be independent of strain rate and temperature, we can simulate the torque-twist curves that match the experimental ones of Liu et al. [2012]. It is shown that the size effect results from the nucleation and pile-up of excess dislocations.
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