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The deformation and fracture kinetics of stress corrosion cracking

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Abstract

The concepts of deformation and fracture kinetics theory are extended for the analysis of stress corrosion cracking. A single, coherent system is developed that provides the full kinetics description of the typical SCC behavior. The kinetics approach shows that Regions I and II are associated with two consecutive energy barriers, parallel with the single barrier associated with Regon III. The kinetics analysis of two consecutive barriers leads to a four-term expression, rather than to the generally considered two-term form. The effect of the threshold stress intensity is predicted by the complete desxription of the consecutive barrier system.

Résumé

Les concepts de la déformation et de la théorie de la cinétique de la rupture sont étendus à l'analyse de la fissuration par corrosion fissurante. Un système simple et cohérent a été développé en vue de fournir une description de la cinétique complète d'un comportement typique de fissuration par corrosion sous contrainte. L'approche cinétique montre que les Régions I et II sont associées à deux barrières d'énergie consécutives, elles-même associées à la barrière simple correspondant à la Région III. L'analyse cinétique de deux barrières consécutives conduit à une expression à quatre termes au lieu de l'expression à deux termes que l'on considère généralement. L'effet de l'intensité de contrainte de seuil est prédit par une description complète du système de barrière consécutive.

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Krausz, A.S. The deformation and fracture kinetics of stress corrosion cracking. Int J Fract 14, 5–15 (1978). https://doi.org/10.1007/BF00032381

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  • DOI: https://doi.org/10.1007/BF00032381

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