An investigation of the onset of elastoplastic deformation during nanoindentation in MgO single crystal (001) and (110) planes

Dong, Zhigang, Huang, Han and Kang, Renke (2010) An investigation of the onset of elastoplastic deformation during nanoindentation in MgO single crystal (001) and (110) planes. Materials Science And Engineering A Structural Materials Properties Microstructure And Processing, 527 16-17: 4177-4184. doi:10.1016/j.msea.2010.03.037

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Author Dong, Zhigang
Huang, Han
Kang, Renke
Title An investigation of the onset of elastoplastic deformation during nanoindentation in MgO single crystal (001) and (110) planes
Journal name Materials Science And Engineering A Structural Materials Properties Microstructure And Processing   Check publisher's open access policy
ISSN 0921-5093
Publication date 2010-06
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.msea.2010.03.037
Volume 527
Issue 16-17
Start page 4177
End page 4184
Total pages 8
Place of publication Netherlands
Publisher Elsevier
Collection year 2011
Language eng
Abstract Nanoindentation was performed in the (0. 0. 1) and (1. 1. 0) planes of magnesium oxide single crystal. The results showed that pop-in events were observed in both cases, which were accompanied by acoustic emissions. The energy released in a pop-in event was related to the acoustic emission energy. The pop-in indicated the onset of plastic deformation. Using the Hertzian contact theory and the measured pop-in load, the critical shear stresses for slipping on the (0. 0. 1) and (1. 1. 0) planes were estimated. The stress value for the (0. 0. 1) plane was about 17% higher than that of the (1. 1. 0) plane. © 2010 Elsevier B.V.
Keyword MgO
Nanoindentation
Pop-in
Deformation
Shear stress
Acoustic emission
Mechanical-properties
Thin-films
Indentation
Silicon
Hardness
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
 
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