Title: A STUDY OF RESIDUAL STRESSES INDUCED BY REDUCTION REACTIONS USING X-RAY D I FFRACTION AN D FIN ITE E L E M E N T MODELING

Abstract:
Residual stresses generated due to the volume shrinkage that accompanies the constrained reduction of NiAl₂ O₄ to a metal-ceramic composite of Ni and alumina were investigated on model specimens. X-ray diffraction stress measurements using Cu and Cr X-ray sources were performed and mill be compared to finite element calculation predictions. The aim of this study is to explore the possibility of using these stresses to place the outer surfaces of ceramic bodies under compression thereby increasing their fracture resistance (i.e. "tempering"). Room: 261 Wednesday Morning, May 7 surface and Interface Characterization
(Ref. SXVIII-041-97)

Source: NDE of Ceramics '97 May 4-7, Symposium on Nondestructive Evaluation of Ceramics at the American Ceramic Society 99th Annual Meeting, Cincinnati, Ohio.
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