About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
Fatigue and Fracture Behavior of Extruded Mg-Y-Zn Alloys Containing LPSO Phase |
Author(s) |
Fabien Briffod, Wujun Yin, Takayuki Shiraiwa, Manabu Enoki |
On-Site Speaker (Planned) |
Fabien Briffod |
Abstract Scope |
The present study investigates the fatigue and fracture behavior of extruded Mg-Y-Zn alloys containing various amount of long-period stacking order (LPSO) phase. To this end, strain-controlled low-cycle fatigue, load-controlled high-cycle fatigue, and three-point bending tests are carried out. The results reveal a decrease in the fatigue life against the plastic strain amplitude with the increase in LPSO phase volume fraction but also an increase in the high-cycle fatigue limit. The latter one is associated with the decreasing presence of coarse equiaxed grains due to a higher recrystallization rate with the increase in LPSO content. Finally, bending tests reveals a shift in the fracture behavior from ductile to brittle with the increase in the LPSO phase volume fraction resulting in a decrease in fracture toughness. The present results are discussed in view of the different microstructural features of the α-Mg and LPSO phases. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |