Abstract
Abstract Two basic concepts have to be met to ensure a valid a˚(KI) relation, independent of crack depth, for corrosion-induced crack growth in high-strength metallic materials: the concept of linear elastic fracture mechanics and the concept of occluded cell corrosion. Their validity has been proven under conditions of cathodic stress corrosion cracking (SCC) in a high-strength, low-alloy steel using specimens with different initial crack depths and environments with different pH levels. The observed kinetic effects are discussed on the base of environmental influences on the chemical driving force for crack growth, as well as in respect of brittle fracture of steel wires in prestressed concrete.
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