| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
In-Situ Multi-Scale Analysis of Local Deformation Behavior of Lath Martensite in Low-Carbon-Steel |
| Author(s) |
Shuang Gong, Junya Inoue |
| On-Site Speaker (Planned) |
Shuang Gong |
| Abstract Scope |
The particular anisotropic local deformation behavior poses challenges in understanding the deformation mechanism of lath martensite. This study investigates the dislocation dynamics underlying local deformation behavior in low-carbon steel lath martensite, employing a novel combination of in-situ tensile Electron Channeling Contrast Imaging (ECCI) and High-Resolution Digital Image correlation (HR-DIC).
To determine how the lath interface affects dislocation activity, microscopic in-situ ECCI observations were conducted to directly track the behavior of intra-lath dislocation structures and boundary sliding. Boundary sliding was confirmed after a certain extent of deformation within the lath. The ECCI technique was also used to capture the dislocation structures in the vicinity of lath boundaries, which play an important role in local deformation. Meanwhile, the strain distribution of the local deformation was calculated using the HR-DIC technique, validating the microscopic observations of dislocation movement. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Other, |