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Dealloying Induced Stress Corrosion Cracking


Abstract Dealloying induced stress corrosion cracking is particularly relevant in energy conversion systems (both nuclear and fossil fuel) as many failures in alloys such as austenitic stainless steel and nickel-based systems result directly from dealloying. This study provides evidence of the role of unstable dynamic fracture processes in dealloying induced stress-corrosion cracking of face-centered cubic alloys. Corrosion of such alloys often results in the formation of a brittle nanoporous layer which we hypothesize serves to nucleate a crack that owing to dynamic effects penetrates into the un-dealloyed parent phase alloy. Thus, since there is essentially a purely mechanical component of cracking, stress corrosion crack propagation rates can be ... (more)
Created Date 2012
Contributor Sun, Shaofeng (Author) / Sieradzki, Karl (Advisor) / Jiang, Hanqing (Committee member) / Peralta, Pedro (Committee member) / Arizona State University (Publisher)
Subject Engineering / Materials Science / dealloying / film induced cleavage / nanoporous gold / stress corrosion cracking
Type Doctoral Dissertation
Extent 188 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Ph.D. Materials Science and Engineering 2012
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis