Frontiers of corrosion science

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Stress corrosion cracking (SCC) is the slow growth of cracks under the simultaneous influence of a tensile stress and a reactive environment. Usually the term is applied to metals, although glasses and ceramics can also show related phenomena. SCC has enormous engineering importance in a wide range of industries. In metals, which are the subject of this proposal, there have always been fierce arguments as to the nanoscale events that occur at the tips of such cracks. Recently, new tools and theories have evolved that can aspire to observe and model such events. However they have been used mainly to study complex engineering alloys in difficult environments such as high-temperature water, or in the case of certain atomistic modelling schemes, materials that are more like brittle solids than metals. In this project, we will revert to easily studied model alloy systems and apply a range of modern approaches to them. This should greatly advance the foundations of the subject.