Understanding the role of Cr and Ag addition on the Microstructure, Hydrogen Permeability and Environmentally Assisted Cracking behavior of an Al-Zn-Mg-Cu-Zr 7xxx Alloy

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This dissertation focuses on the microstructure-related mechanistic understanding of the phenomenon of hydrogen environmentally-assisted cracking (HEAC) of a high-strength Al-Zn-Mg-Cu-Zr 7xxx alloy. As a potential HEAC mitigation strategy, the impact of alloy chemistry modification with Cr and Ag on the microstructure, grain boundary microchemistry, hydrogen permeation and environmentally assisted cracking mechanism were explored.

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Chijioke Kenneth Akuata

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Materials Science 7xxx Aluminium Alloys Hydrogen Environmentally Assisted Cracking (HEAC)

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