Plastic deformation of copper thin foils |
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Authors: | N NozakiMasao Doyama Y Kogure |
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Affiliation: | Teikyo University of Science and Technology, Uenohara, Yamanashi 409-0193, Japan |
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Abstract: | According to one suggested model, bending of a single crystal introduces edge dislocations of the same sign. In the present study, this model is examined by computer simulation using molecular dynamics. When a notch is present on the tension surface, Heidenreich-Shockley partial dislocations are created near the tip of the notch. In the compression surface, partial dislocations are created due to wrinkling of the crystal plane. The results of simulation shows that dislocations are more easily created in a compressive bending region than in a tension bending region or simple tension region. For shear deformation, partial dislocations are created on the highest resolved shear stress slip plane {1 1 1} and slip in the direction of highest resolved shear stress. |
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Keywords: | Bending shearing and compression of single crystals Copper Partial dislocations Creation of dislocations Motion of dislocations Molecular dynamics Embedded atom potential Computer simulation |
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