EFFECT OF DEVELOPMENT OF SCANDIUM TRIALUMINIDE PRECIPITATES ON CORROSION AND MECHANICAL BEHAVIOR IN ALUMINUM-MAGNESIUM ALLOYS
Date of Award
Open Access Master's Thesis
Master of Science in Materials Science and Engineering (MS)
Administrative Home Department
Department of Materials Science and Engineering
Committee Member 1
Committee Member 2
Development of aluminum alloys has seen an increase in attention in recent years. The 5xxx series of Al-Mg alloys has the potential to provide strong, lightweight materials in various industry applications, however issues with strain formability and corrosion hinder the development of these alloys. The addition of Sc for developing Al3Sc precipitates provides considerable precipitation strengthening as well as grain refinement characteristics that can help mitigate these issues. Alloys with varied Mg content were analyzed for heat treatment aging responses and precipitate formation, changes in mechanical behavior related to the Portevin-le Chatelier effect, and effects on intergranular corrosion when tested with and without inclusion of Al3Sc precipitates. Findings are presented that show similarities in aging response, differences in precipitate formation, alterations in the severity and type of strain instability during deformation, and mitigation of intergranular corrosion.
Williams, Carson, "EFFECT OF DEVELOPMENT OF SCANDIUM TRIALUMINIDE PRECIPITATES ON CORROSION AND MECHANICAL BEHAVIOR IN ALUMINUM-MAGNESIUM ALLOYS", Open Access Master's Thesis, Michigan Technological University, 2019.