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Evidence for Coble creep in the relaxation of surface-compressive stresses in tempered polycrystalline aluminium oxide

Evidence for Coble creep in the relaxation of surface-compressive stresses in tempered polycrystalline aluminium oxide
Evidence for Coble creep in the relaxation of surface-compressive stresses in tempered polycrystalline aluminium oxide
The kinetics of relaxation of surface‐compressive stresses in tempered polycrystalline aluminum oxide were studied. Stress relaxation was observed at temperatures of 775°C and higher. Analysis of the data suggests that the relaxation occurred by Coble creep, which represents the first evidence, although indirect, of the existence of the Coble creep mechanism in ceramics.
0021-8979
3729–3731
Krohn, D.A.
0cc90bb6-0ad9-4e7c-957d-60fb7dabdfdd
Urick, P.A.
ad24c5c4-e42d-48fe-95d5-c8a364722b54
Hasselman, D.P.H.
50a5910a-de68-44b8-b184-65f3cda46e6a
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Krohn, D.A.
0cc90bb6-0ad9-4e7c-957d-60fb7dabdfdd
Urick, P.A.
ad24c5c4-e42d-48fe-95d5-c8a364722b54
Hasselman, D.P.H.
50a5910a-de68-44b8-b184-65f3cda46e6a
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Krohn, D.A., Urick, P.A., Hasselman, D.P.H. and Langdon, T.G. (1974) Evidence for Coble creep in the relaxation of surface-compressive stresses in tempered polycrystalline aluminium oxide. Journal of Applied Physics, 45 (9), 3729–3731. (doi:10.1063/1.1663851).

Record type: Article

Abstract

The kinetics of relaxation of surface‐compressive stresses in tempered polycrystalline aluminum oxide were studied. Stress relaxation was observed at temperatures of 775°C and higher. Analysis of the data suggests that the relaxation occurred by Coble creep, which represents the first evidence, although indirect, of the existence of the Coble creep mechanism in ceramics.

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Published date: 1 September 1974

Identifiers

Local EPrints ID: 489068
URI: http://eprints.soton.ac.uk/id/eprint/489068
ISSN: 0021-8979
PURE UUID: ac18f186-0d09-4ad5-847a-a8ed3338097e
ORCID for T.G. Langdon: ORCID iD orcid.org/0000-0003-3541-9250

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Date deposited: 12 Apr 2024 16:32
Last modified: 13 Apr 2024 01:38

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Contributors

Author: D.A. Krohn
Author: P.A. Urick
Author: D.P.H. Hasselman
Author: T.G. Langdon ORCID iD

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