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Title: Thermal residual stresses and their toughening effect in Al{sub 2}O{sub 3} platelet reinforced glass

Abstract

Fluorescence spectroscopy has been used to measure the thermal residual stresses in Al{sub 2}O{sub 3}-platelet/borosilicate glass composites. Tensile residual stresses were found in the platelets, implying the presence of compressive residual stresses in the glass matrix. Measurements of stresses in the bulk of the composite could be obtained using fluorescence from platelets below the specimen surface. The measured stresses lay between the predictions of models for spherical particles and thin platelets, but were closer to the former for the range of platelet contents investigated (5--30 vol.%). Estimates of the increase in toughness associated with the compressive residual stresses in the matrix suggest that this mechanism makes a significant contribution to the toughening effect of the Al{sub 2}O{sub 3} platelets.

Authors:
; ; ;  [1];  [2]
  1. Univ. of Manchester and UMIST (United Kingdom). Manchester Materials Science Centre
  2. Technische Universitaet Ilmenau (Germany)
Publication Date:
OSTI Identifier:
684381
Resource Type:
Journal Article
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 47; Journal Issue: 11; Other Information: PBD: 8 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; RESIDUAL STRESSES; ALUMINIUM OXIDES; BOROSILICATE GLASS; COMPOSITE MATERIALS; FLUORESCENCE SPECTROSCOPY; FRACTURE PROPERTIES

Citation Formats

Todd, R.I., Sinclair, R., Yallee, R.B., Young, R.J., and Boccaccini, A.R. Thermal residual stresses and their toughening effect in Al{sub 2}O{sub 3} platelet reinforced glass. United States: N. p., 1999. Web. doi:10.1016/S1359-6454(99)00177-9.
Todd, R.I., Sinclair, R., Yallee, R.B., Young, R.J., & Boccaccini, A.R. Thermal residual stresses and their toughening effect in Al{sub 2}O{sub 3} platelet reinforced glass. United States. doi:10.1016/S1359-6454(99)00177-9.
Todd, R.I., Sinclair, R., Yallee, R.B., Young, R.J., and Boccaccini, A.R. Wed . "Thermal residual stresses and their toughening effect in Al{sub 2}O{sub 3} platelet reinforced glass". United States. doi:10.1016/S1359-6454(99)00177-9.
@article{osti_684381,
title = {Thermal residual stresses and their toughening effect in Al{sub 2}O{sub 3} platelet reinforced glass},
author = {Todd, R.I. and Sinclair, R. and Yallee, R.B. and Young, R.J. and Boccaccini, A.R.},
abstractNote = {Fluorescence spectroscopy has been used to measure the thermal residual stresses in Al{sub 2}O{sub 3}-platelet/borosilicate glass composites. Tensile residual stresses were found in the platelets, implying the presence of compressive residual stresses in the glass matrix. Measurements of stresses in the bulk of the composite could be obtained using fluorescence from platelets below the specimen surface. The measured stresses lay between the predictions of models for spherical particles and thin platelets, but were closer to the former for the range of platelet contents investigated (5--30 vol.%). Estimates of the increase in toughness associated with the compressive residual stresses in the matrix suggest that this mechanism makes a significant contribution to the toughening effect of the Al{sub 2}O{sub 3} platelets.},
doi = {10.1016/S1359-6454(99)00177-9},
journal = {Acta Materialia},
number = 11,
volume = 47,
place = {United States},
year = {1999},
month = {9}
}