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Intergranular Corrosion And Stress Corrosion Cracking Of Extruded Aa6005a, David James Seguin
Intergranular Corrosion And Stress Corrosion Cracking Of Extruded Aa6005a, David James Seguin
Dissertations, Master's Theses and Master's Reports - Open
A research program focused on understanding the intergranular corrosion (IGC) and stress corrosion cracking (SCC) behavior of AA6005A aluminum extrusions is presented in this dissertation. The relationship between IGC and SCC susceptibility and the mechanisms of SCC in AA6005A extrusions were studied by examining two primary hypotheses.
IGC susceptibility of the elongated grain structure in AA6005A exposed to low pH saltwater was found to depend primarily on the morphology of Cu-containing precipitates adjacent to the grain boundaries in the elongated grain structure. IGC susceptibility was observed when a continuous (or semi-continuous) film of Cu-containing phase was present along the grain …