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Microstructural analysis of edge cracking in magnesium alloy sheet under rolling

Title
Microstructural analysis of edge cracking in magnesium alloy sheet under rolling
Author
Xi Chen
Keywords
Edge crack; Magnesium alloy; Rolling; Microstructure; ELECTRICAL STEEL; ELASTIC-MODULUS; PLASTIC ZONE; MG ALLOY; TEXTURE; DAMAGE; HARDNESS; DEFORMATION; PROPAGATION; SIMULATION
Issue Date
2012-06
Publisher
Maney Publishing
Citation
Materials Science and Technology,Vol.28 No.4 [2012],p415-419
Abstract
Magnesium alloy sheet is prone to edge cracking during rolling. We carry out a microstructural analysis for edge cracks in Mg sheet under multiple rolling passes and different temperatures, where the microstructure, hardness and crystal orientation are explored and compared at the edge and middle of the specimen. The results indicate that the cracks are likely initiated from the edge due to coarsened grains, less basal texture and severe damage. A grain band with very fine grains is developed along the crack propagation path owing to the recrystallisation that takes place at the plastic zone in front of the crack tip. A rolling map is also obtained, which may help to guide the edge crack free rolling of Mg sheet.
URI
http://www.tandfonline.com/doi/abs/10.1179/1743284711Y.0000000067?journalCode=ymst20http://hdl.handle.net/20.500.11754/39290
ISSN
0267-0836
DOI
10.1179/1743284711Y.0000000067
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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