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Residual stress distributions around indentations and scratches in polycrystalline Al2O3 and Al2O3/SiC nanocomposites measured using fluorescence probes

Abstract:

We report a study of the residual stress state around indentations and single-point scratches in polycrystalline alumina and alumina/SiC nanocomposites using Cr3+ fluorescence piezospectroscopy. The alumina specimens displayed residual stress levels up to 550 MPa, whereas the nanocomposite specimens had maximum stress levels close to 2 GPa. These stress levels are consistent with those obtained using other experimental techniques. The spatial variation of this stress is shown to be consistent...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1016/j.actamat.2007.09.014

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Department of Materials
Role:
Author
Engineering and Physical Sciences Research Council More from this funder
Publisher:
Elsevier Publisher's website
Journal:
Acta Materialia Journal website
Volume:
56
Issue:
1
Pages:
140-149
Publication date:
2008-01-05
DOI:
ISSN:
1359-6454
URN:
uuid:8a3dbc0a-89e9-430f-b9a6-82f4eaa8672e
Source identifiers:
6775
Local pid:
pubs:6775

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