| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Mechanical Behavior of Nanometer Ni by Simulating Nanoindentation |
| TANG Qi-Heng1,2, YANG Tian-Yong1, DING Lan3 |
| 1State Key Laboratory of Nonliear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 1001902State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 1000803The School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083 |
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| Cite this article: |
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TANG Qi-Heng, YANG Tian-Yong, DING Lan 2010 Chin. Phys. Lett. 27 026104 |
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Abstract An indentation simulation of the crystal Ni is carried out by a molecular dynamics technique (MD) to study the mechanical behavior at nanometer scales. Indenter tips with both sphere shape and conical shape with 60° cone angle are used, and simulation samples with different crystal orientations are adopted. Some defects such as dislocations and point defects are observed. It is found that nucleated defects (dislocations, amorphous atoms) are from the local region near the pin tip or the sample surface. The temperature distribution of the local region is analyzed and it can explain our MD simulation results.
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| Keywords:
61.72.Hh
64.70.Kg
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Received: 09 September 2009
Published: 08 February 2010
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| PACS: |
61.72.Hh
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(Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, EPR, NMR, etc.))
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64.70.kg
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(Semiconductors)
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