Stress corrosion cracking (SCC) of magnesium (Mg) alloys

Atrens, A., Winzer, N., Dietzel, W., Srinivasan, P. B. and Song, G. L. (2014). Stress corrosion cracking (SCC) of magnesium (Mg) alloys. In G. L. Song (Ed.), Corrosion of Magnesium Alloys (pp. 299-364) Cambridge, UK: Woodhead Publishing Limited. doi:10.1533/9780857091413.3.299

Author Atrens, A.
Winzer, N.
Dietzel, W.
Srinivasan, P. B.
Song, G. L.
Title of chapter Stress corrosion cracking (SCC) of magnesium (Mg) alloys
Title of book Corrosion of Magnesium Alloys
Place of Publication Cambridge, UK
Publisher Woodhead Publishing Limited
Publication Year 2014
Sub-type Research book chapter (original research)
DOI 10.1533/9780857091413.3.299
Open Access Status Not yet assessed
Year available 2014
ISBN 9781845697082
Editor G. L. Song
Chapter number 8
Start page 299
End page 364
Total pages 66
Total chapters 17
Language eng
Subjects 2200 Engineering
Abstract/Summary This chapter reviews current research into stress corrosion cracking (SCC) in magnesium (Mg) alloys, particularly intergranular stress corrosion cracking (IGSCC) and transgranular stress corrosion cracking (TGSCC).A nearly continuous second phase along grain boundaries causes IGSCC. The second phase accelerates corrosion of the adjacent matrix by micro-galvanic corrosion; the applied stress opens the crack and allows propagation through the alloy. IGSCC can be avoided by appropriate Mg alloy design. TGSCC is the intrinsic form of SCC. This is caused by an interaction of hydrogen (H) with the microstructure, so a study of H-trap interactions is needed to understand this damage mechanism, and in order to design alloys more resistant to TGSCC. This understanding is urgently needed if Mg alloys are to be used safely in service because prior research indicates that many Mg alloys have a threshold stress for SCC of the order of half the yield stress in common environments, including high-purity water.
Keyword Corrosion
Stress corrosion cracking
Q-Index Code B1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Book Chapter
Collection: School of Mechanical & Mining Engineering Publications
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Citation counts: Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Fri, 05 Jan 2018, 17:20:43 EST