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- A. M. Minor
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720
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- J. W. Morris
- Department of Materials Science and Engineering, University of California, Berkeley, California 94720
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- E. A. Stach
- National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, One Cyclotron Road, MS 72, Berkeley, California 94720
書誌事項
- 公開日
- 2001-09-10
- DOI
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- 10.1063/1.1400768
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>We report the development of a method for quantitative, in situ nanoindentation in an electron microscope and its application to study the onset of deformation during the nanoindentation of aluminum films. The force–displacement curve developed shows the characteristic “staircase” instability at the onset of plastic deformation. This instability corresponds to the first appearance of dislocations in a previously defect-free grain. Plastic deformation proceeds through the formation and propagation of prismatic loops punched into the material, and half loops that emanate from the sample surface. These results represent the first real time observations of the discrete microstructural events that occur during nanoindentation.</jats:p>
収録刊行物
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- Applied Physics Letters
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Applied Physics Letters 79 (11), 1625-1627, 2001-09-10
AIP Publishing