| Issue |
EPJ Web Conf.
Volume 250, 2021
DYMAT 2021 - 13th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Article Number | 03013 | |
| Number of page(s) | 4 | |
| Section | Microstructural Effects | |
| DOI | https://doi.org/10.1051/epjconf/202125003013 | |
| Published online | 09 September 2021 | |
https://doi.org/10.1051/epjconf/202125003013
An Evaluation on Fracture Toughness in SUS304 at High Strain Rate Considering Process Zone
1
Graduate School of Advanced Science and Engineering, Hiroshima University, Hiroshima, Japan
2
Academy of Science and Technology, Hiroshima University, Hiroshima, Japan
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 9 September 2021
Abstract
Some research works report the relationships between transformation toughening and process zone. In SUS304, the reduction of transformation toughening at high strain rate is expected from the result of a small punch test. Currently, the process zone in SUS304 is fuzzily defined. Therefore, a consideration of damaging process is necessary in order to understand a fracture mechanism associated with transformation toughening and process zone. In this study, at first, tensile tests of pre-cracked sheet specimens made of SUS304 are conducted by the split Hopkinson pressure bar in order to understand the fracture mechanism phenomenologically at high deformation rate. During the test, a DC potential difference method is introduced to capture onset time of fracture.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.