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Residual Stress Distribution of Ceramic-Metal Joint

Published online by Cambridge University Press:  06 March 2019

Masanori Kurita ,
Makoto Sato ,
Ikuo Ihara  and
Akira Saito
Masanori Kurita
Affiliation:
Nagaoka University of Technology Nagaoka, 940-21 Japan
Makoto Sato
Affiliation:
Nagaoka University of Technology Nagaoka, 940-21 Japan
Ikuo Ihara
Affiliation:
Nagaoka University of Technology Nagaoka, 940-21 Japan
Akira Saito
Affiliation:
Hitachi, Ltd, Chiyoda-ku, Tokyo, 101 Japan
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Abstract

Ceramics are sometimes bonded to ductile metals in order to make up for their brittle behavior for industrial use. The residual stress will be induced in ceramics bonded to metals at high temeprature, and it has a strong influence on the strength of ceramic-metal joints. A silicon nitride plate was bonded to a carbon steel plate by brazing to a copper sheet sandwiched between the two materials. The residual stress distribution of the joint specimen was determined by x-ray diffraction using the Gaussian curve method. The measured residual stress distribution almost agreed with that calculated by the three-dimensional thermoelastoplastic stress analysis using FEM, but differed remarkably from that calculated by the two-dimensional stress analysis. This is because a stress concentration occurs at the ceramic-metal interface and the stress distributes three - dimensionally. The stress σx in the axial direction on the surface of the specimen takes maximum values at the center and the edge of the interface.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 33: Thirty-Eighth Annual Conference on Applications of X-ray Analysis, July 31 - August 4, 1989 , 1989 , pp. 353 - 362
Copyright
Copyright © International Centre for Diffraction Data 1989

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