Environment-assisted cracking of cast WE43-T6 magnesium

Conference item

Environment-assisted cracking of WE43 cast magnesium (4.2 wt.% Yt, 2.3 wt.% Nd, 0.7% Zr, 0.8% HRE) in the T6 peak-aged condition was induced in ambient air in notched specimens. The mechanism of fracture was studied using electron backscatter diffraction, serial sectioning and in situ observations of crack propagation. Cracks initiated at the intergranular brittle intermetallic, and propagated by transgranular cleavage. These observations imply that a microstructural model for the static fati...

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Authors: Marrow, T; Bin Ahmad, A; Khan, I; Sim, SMA; Torkamani, S

• Publication status: Published
• Host title: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• Volume: 387
• Issue: 1-2 SPEC. ISS.
• Pages: 419-423
• Publication date: 2004-12-15
• DOI: 10.1016/j.msea.2003.12.074
• ISSN: 0921-5093
• Keywords: fractography; environment-assisted cracking; short cracks; electron backscatter diffraction; crystallography; magnesium