| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Hydrogen and Nitrogen Contents Effects on Mechanical Behavior of Austenitic Stainless Steel |
| Author(s) |
Ikram Hamdaoui, Abdelali Oudriss, Xavier Feaugas |
| On-Site Speaker (Planned) |
Ikram Hamdaoui |
| Abstract Scope |
The effects of hydrogen and nitrogen content on the mechanical behavior of AISI 316L austenitic stainless steels (ASS) were investigated. Various nitrogen-alloyed ASS (0.013 to 0.18 wt%) were uniformly hydrogen-pre-charged using cathodic polarization. Specimens with different thicknesses (1, 0.5, and 0.2 mm) were used to perform the tensile tests with a strain rate of 3.10-4 s-1. It was observed that nitrogen increases yield strength and tensile strength. Thinner specimens charged with hydrogen exhibited a decrease in ductility and an increase in tensile strength. However, the effect was less pronounced in thicker specimens due to limited hydrogen penetration away from the surface. Additionally, hydrogen charging led to an increase in the transition stress σII from stage I to stage II and the hardening rate θII. Furthermore, the combined effect of nitrogen and hydrogen on the mechanical properties was thoroughly examined based on these observations using several technics (FIB-SIM, EBSD, and TEM). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Iron and Steel, Mechanical Properties |