Cyclic thermal shock resistance of TiC/Ni sub 3 Al FGMs

Cyclic thermal shock tests on three TiC/Ni sub 3 Al FGM specimens were carried out under simulated large-temperature-difference conditions. The effective thermal conductivity was measured and the variation of microstructure was observed. The effects of the sample geometry and the TiC side surface st...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 1997-01, Vol.28B (1-2), p.21-27
Main Authors: Zhang, L M, Hirai, T, Kumakawa, A, Yuan, R Z
Format: Article
Language:English
Online Access:Get full text
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Summary:Cyclic thermal shock tests on three TiC/Ni sub 3 Al FGM specimens were carried out under simulated large-temperature-difference conditions. The effective thermal conductivity was measured and the variation of microstructure was observed. The effects of the sample geometry and the TiC side surface state on the cyclic thermal shock behavior were investigated, together with thermal stresses under steady-heating conditions. The relation between the variation of effective thermal conductivity and crack propagation was also investigated. The damage which occurred in these FGMs was mainly caused by excessive inplane compressive stresses on the surface of the TiC side during the cyclic thermal shock tests.
ISSN:1359-8368