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Identification of disclinations in the structure of strongly deformed materials |
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| Institution: | 1. The Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, PR China;2. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, PR China;3. College of Mechanical and Electrical Engineering, Hunan University of Science and Technology, Xiangtan 411201, PR China |
| Abstract: | The deformation of metallic materials up to large strains leads to the formation of fine grain structures (down to the nanometric scale) with high densities of grain boundaries and grain boundary junctions. Such structures demonstrate significant lattice rotations and the presence of disclination defects at grain boundary junctions. We present the results of transmission electron microscopy (TEM) observations of disclinations in strongly deformed metals and describe the theoretical approaches for their identification. |
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