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http://hdl.handle.net/11375/18389
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DC Field | Value | Language |
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dc.contributor.advisor | Kish, Joseph | - |
dc.contributor.advisor | McDermid, Joseph | - |
dc.contributor.author | Wilson, Brycklin | - |
dc.date.accessioned | 2015-10-08T19:26:52Z | - |
dc.date.available | 2015-10-08T19:26:52Z | - |
dc.date.issued | 2015-11 | - |
dc.identifier.uri | http://hdl.handle.net/11375/18389 | - |
dc.description.abstract | The stress corrosion cracking (SCC) behaviour of Mg alloy AZ31B was investigated with respect to surface condition. Salt fog U-bend testing was used to identify changes in SCC as a result of surface conditioning pre-treatments. Six surface conditions were investigated: as-received, mechanically-polished, sulphuric acid (H2SO4)-cleaned, mechanically-polished then H2SO4-cleaned, aged H2SO4-cleaned, and acetic acid (C2H4O2)-cleaned. Results showed that the rate of SCC was accelerated and the SCC mode was intergranular for all surface conditioning treatments involving H2SO4-cleaning. It was found that the accelerated intergranular SCC was a result of three contributing factors: a low pH, the presence of aggressive ions, and a porous film which allowed direct contact between the metal surface and the electrolyte. Characterization of the surfaces using potentiodynamic polarization and cross-sectional images of sample surfaces showed that in the absence of one of these three contributing factors intergranular SCC would not occur. | en_US |
dc.language.iso | en | en_US |
dc.subject | Magnesium | en_US |
dc.subject | Stress Corrosion Cracking | en_US |
dc.title | THE EFFECT OF H2SO4 SURFACE PRE-TREATMENT ON THE STRESS CORROSION CRACKING OF MAGNESIUM ALLOY AZ31B | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Materials Science and Engineering | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Applied Science (MASc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Wilson_Brycklin_M_201509_MASc.pdf | MASc Thesis | 5.41 MB | Adobe PDF | View/Open |
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