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Cylindrical
indentation induced deformation in face-centered cubic metal
single crystals
Yong Xue Gan, Yuki Saito and Xi Chen |
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Vol. 2 (2007), No. 3, 557–572
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Abstract |
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We investigate the deformation field induced by a cylindrical indentation on a face-centered cubic single crystal of aluminum or copper. We first present experimental measurements of the load–displacement curve and the crystal lattice rotation field (under plane strain condition) of an aluminum single crystal subject to indentation, together with related results for a copper crystal. Next, finite element simulations of the lattice rotation and displacement field associated with the cylindrical indentation are provided. The numerical and experimental results about lattice rotation features are compared with theoretical predictions based on the single crystal plasticity. Finally, the displacement fields obtained from the numerical solutions and experiments are compared. Both electron backscatter diffraction experiments using scanning electron microscopy and finite element simulations show the existence of different slip sector boundaries in the single crystals, in agreement with theoretical predictions of active slip systems and dislocation structures. |
Keywords
indentation, single crystal, anisotropic plasticity,
deformation field, lattice rotation map, numerical
simulations
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Milestones
Received: 24 July 2006
Accepted: 9 October 2006
Published: 1 May 2007
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Authors |
| Yong Xue Gan | |
| Department of Mechanical
Engineering Albert Nerken School of Engineering The Cooper Union for the Advancement of Science and Art 51 Astor Place New York, NY 10003 United States |
Columbia Nanomechanics Research
Center Department of Civil Engineering and Mechanics 622 Mudd Building Columbia University New York, NY 10027 United States |
| Yuki Saito | |
| Columbia Nanomechanics Research
Center Department of Civil Engineering and Mechanics 622 Mudd Building Columbia University New York, NY 10027 United States |
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| Xi Chen | |
| Department of Civil Engineering and
Engineering Mechanics Fu Foundation School of Engineering and Applied Science Columbia University 500 West 120th Street New York, NY 10027 United States |
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