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References (12)
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- Publisher
- Wiley
- Copyright
- Copyright © 1982 Wiley Subscription Services
- ISSN
- 0002-7820
- eISSN
- 1551-2916
- DOI
- 10.1111/j.1151-2916.1982.tb10426.x
- Publisher site
- See Article on Publisher Site
Abstract
Particles which undergo a stress‐induced martensitic transformation are known to toughen certain brittle materials. The enhanced toughness can be considered to originate from the residual strain fields which develop following transformation and tend to limit the crack opening. The increased toughness can estimated from the crack‐tip stress‐intensity change induced by the transformation of a volume of material near the crack tip. It is found that the initial zone, prior to crackgrowth, provides no change in stress intensity. As the crack grows, the zone (associated with a positive transformation strain) induces a stress‐intensity reduction that rises to a maximum level after some crack propagation. The influence of particle‐size distribution on the stress‐intensity reduction is also discussed.
Journal
Journal of the American Ceramic Society – Wiley
Published: Jan 1, 1982