About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
|
Symposium
|
12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
|
Presentation Title |
FTMP-based Attempts Toward Kink Formation and Strengthening in MFS-Mg |
Author(s) |
Tadashi Hasebe, Yuta Nawa |
On-Site Speaker (Planned) |
Tadashi Hasebe |
Abstract Scope |
Identification of the kink formation/strengthening mechanisms in LPSO-Mg systems is attempted based on Field Theory of Multiscale Plasticity, where FTMP-incorporated FE simulations are conducted aiming at reproducing kinking processes and the attendant strengthening. The incompatibility-based relevant underlying microscopic degrees of freedom for kinking are introduced, by projecting it on to that manifested as a variable crystallographically compatible condition for additional shear deformation, i.e., R-1 connectivity, in addition to that for the slip modes. The targeted phenomena also include scale-free-like energy release characteristics together with the specific return maps based on the combined ND–AE technique. The simulated results successfully reproduce not only the kink morphologies but also the energy-releasing characteristics. Further examinations about the choice of the measure for driving the R-1 connectivity relationship lead us to conclude that non-uniform formation of the kinking regions can play pivotal roles in raising the flow stress, in addition to the other features. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |