| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2024
|
| Presentation Title |
Cryogenic Deformation Behavior of a Dual-phase Mg-Li Alloy Investigated by In-situ Neutron Diffraction |
| Author(s) |
Wu Gong, Reza Gholizadeh, Takuro Kawasaki, Kazuya Aizawa, Stefanus Harjo |
| On-Site Speaker (Planned) |
Wu Gong |
| Abstract Scope |
Mg and its alloys commonly exhibit inadequate formability due to the limited availability of deformation modes in hcp phase. The addition of Li can stabilize a bcc phase in Mg alloys at room temperature, resulting in dual-phase (hcp+bcc) Mg-Li alloys that possess excellent formability. However, these Mg-Li alloys exhibit poor work-hardening ability due to the dislocation recovery resulting in the low strength at room temperature. Considering that the dislocation recovery can be suppressed at cryogenic temperatures and the deformation mechanisms may vary with temperature, we tried to investigate the deformation behavior of a commercial LZ91 alloy (Mg-9Li-1Zn, wt.%) at cryogenic temperatures. In-situ neutron diffraction experiments during tensile deformation at 20 K, 77 K and 298 K were performed by a time-of-flight engineering neutron diffractometer “TAKUMI” at J-PARC. The temperature-dependent deformation mechanisms in LZ91 alloy will be discussed based on the evolutions of phase stress, peak width, and texture during deformation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Mechanical Properties, Other |