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Published in:
2018 | OriginalPaper | Chapter
5. Deformation of Heterogeneous Structures
Authors : Kwansoo Chung, Myoung-Gyu Lee
Published in: Basics of Continuum Plasticity
Publisher: Springer Singapore
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Abstract
As previously discussed, plastic deformation occurs by dislocation sliding or twinning, driven by shear stress; however, dislocation sliding is predominant at room temperature for most metals with a few exceptions. As for the shear stress to induce the plastic deformation, known as the critical shear stress, its true magnitude is much lower than the theoretical value, with sliding facilitated by dislocations, on a single crystal level.