Micro-experimental study of large plastic deformation for high-purity polycrystalline aluminum |
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Authors: | Zhong Zheng Yang Wei Hwang Kehchih |
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Institution: | (1) Tsinghua University, 100084 Beijing, China;(2) Present address: Department of Engineering Mechanics, Tongji University, Tongji, China |
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Abstract: | This paper aims at revealing various micro- deformation characteristics, such as crystalline slip and grain boundary slide,
which are recorded under scanning electronic microscope for high-purity aluminum tensile specimen at room temperature. These
experimental data provide us direct evidence for shear localization near the grain boundary network via multi- directional
grain boundary slide. The nonuniform deformation induced in the grain interiors would have decisive effect on the plastic
flow and failure of polycrystalline materials.
Sponsored by the National Natural Science Foundation of China and the Fok Ying- Tung Education Foundation. |
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Keywords: | polycrystals large plastic deformation grain boundary sliding micromechanics grid method |
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