Large plasticity in magnesium mediated by pyramidal dislocations
Xi'an Jiaotong University · Xi'an University of Science and Technology · +5 more institutions
Abstract
Lightweight magnesium alloys are attractive as structural materials for improving energy efficiency in applications such as weight reduction of transportation vehicles. One major obstacle for widespread applications is the limited ductility of magnesium, which has been attributed to [Formula: see text] dislocations failing to accommodate plastic strain. We demonstrate, using in situ transmission electron microscope mechanical testing, that [Formula: see text] dislocations of various characters can accommodate considerable plasticity through gliding on pyramidal planes. We found that submicrometer-size magnesium samples exhibit high plasticity that is far greater than for their bulk counterparts. Small crystal…
Citation impact
- FWCI
- 15.86
- Percentile
- 100%
- References
- 31
Authors
11Topics & keywords
- Plasticity
- Magnesium
- Materials science
- Crystallography
- Chemistry
- Metallurgy
- Composite material
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