期刊
PHILOSOPHICAL MAGAZINE LETTERS
卷 89, 期 1, 页码 2-10出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500830802537718
关键词
toughness; magnesium alloy; deformation twins; electron backscatter diffraction
类别
资金
- National Institute for Materials Science
The fracture mechanism during fracture toughness testing has been investigated on a coarse-grained magnesium alloy, with an average grain size of 50 m, and a low fracture toughness. The results show that {1012}-type deformation twins are formed at the crack tip and many dislocations pile up on these boundaries. The accumulated strains at these boundaries become the origin of fracture; i.e. cracks propagate along these boundaries between the deformation twins and the matrix.
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