Abstract
Experimental studies involving creep rupture indicate the existence of two different rupture mechanisms. In ductile or transcrystalline rupture one observes a reduction of cross-section as a result of large creep strains caused by slip inside grains. Rupture takes place by propagation of cracks from the surface to the specimen interior along slip planes. Ductile rupture is characteristic of low temperatures and significant strain rates at high stress levels and large strains. Brittle or intercrystalline rupture is the result of material weakness caused by microcracks on grain boundaries because of slips between grains. Rupture takes place if the effective surface of the cross-section is reduced to the critical value. Brittle rupture is characteristic of high temperatures and small strain rates, for low stress level and small strains. The influence of temperature and strain rate on the type of rupture is illustrated in Fig. 12.1. The continuous line refers to large, and the dotted line to small strain rates. The characteristic creep rupture curves, showing the transition from ductile to brittle rupture, are presented in Fig. 12.1b (Grant and Bucklin 1965).
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer-Verlag London Limited
About this chapter
Cite this chapter
Służalec, A. (1992). Creep Rupture. In: Introduction to Nonlinear Thermomechanics. Springer, London. https://doi.org/10.1007/978-1-4471-1906-7_12
Download citation
DOI: https://doi.org/10.1007/978-1-4471-1906-7_12
Publisher Name: Springer, London
Print ISBN: 978-1-4471-1908-1
Online ISBN: 978-1-4471-1906-7
eBook Packages: Springer Book Archive