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Residual stress in ceramics with large thermal expansion anisotropy

Paulik, S. W. and Zimmerman, M. H. and Faber, K. T. and Fuller, E. R., Jr. (1996) Residual stress in ceramics with large thermal expansion anisotropy. Journal of Materials Research, 11 (11). pp. 2795-2803. ISSN 0884-2914. http://resolver.caltech.edu/CaltechAUTHORS:20140908-181326397

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Abstract

Residual stress was measured in sintered and heat-treated Fe_2TiO_5 samples with various grain sizes. The influence of texturing was assessed by comparing the residual stress states of samples having randomly oriented grains and highly oriented grains produced through magnetically assisted processing. The residual stress was measured with x-ray diffraction using Cr K_α radiation. Due to the significant texture and the consequential oscillations in the d_(φψ) vs sin^2 ψ data, the residual stress was calculated using the Marion-Cohen method. Textured samples showed significantly lower residual stresses except when spontaneous microcracking accompanied grain growth in the randomly oriented systems. Elastic modulus measurements showed a direct correlation between the decrease in residual stress and the microcrack density.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1557/JMR.1996.0354DOIArticle
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7943167PublisherArticle
Additional Information:Copyright © Materials Research Society 1996. (Received 10 March 1995; accepted 27 June 1996). Funding for this work was provided by the National Science Foundation under Grant Nos. DMR-9100035 and DMR-9411477. Jonathan Almer provided valuable assistance in the residual stress measurements.
Funders:
Funding AgencyGrant Number
NSFDMR-9100035
NSFDMR-9411477
Record Number:CaltechAUTHORS:20140908-181326397
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140908-181326397
Official Citation: S. W. Paulik, M. H. Zimmerman, K. T. Faber and E. R. Fuller (1996). Residual stress in ceramics with large thermal expansion anisotropy. Journal of Materials Research, 11, pp 2795-2803. doi:10.1557/JMR.1996.0354.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49418
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Sep 2014 15:38
Last Modified:10 Sep 2014 15:38

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