期刊
INTERNATIONAL JOURNAL OF PLASTICITY
卷 81, 期 -, 页码 102-122出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijplas.2016.01.018
关键词
Polycrystalline material; Yield condition; Fracture mechanisms; Numerical algorithms; Diffraction measurements
资金
- NCN - Polish National Center for Science [UMO - 2011/03/N/ST8/04058, DEC - 2013/11/B/ST3/03787]
- MNiSW - Polish Ministry of Science and Higher Education
In situ time of flight neutron diffraction and X-ray synchrotron diffraction methods were applied to measure lattice strains in duplex steels during a tensile test. The experimental results were used to study slips on crystallographic planes and the mechanical effects of damage occurring during plastic deformation. For this purpose the prediction of an elastoplastic self-consistent model was compared with the experimental data. The used methodology allowed to determine the elastic limits and parameters describing work hardening in both phases of studied polycrystalline materials. In the second part of this work the developed elastoplastic model was applied to study damage occurring in the ferritic phase. The theoretical results showed a significant reduction of stresses localized in the damaged phase (ferrite) and confirmed the evolution of the lattice strains measured in the ferritic and austenitic phases. (C) 2016 Elsevier Ltd. All rights reserved.
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