| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Effects of Chromium and Molybdenum on Hydrogen Absorption Behavior in Iron |
| Author(s) |
Vanadia Irisca Yussalla, Kenichi Takai, Tomohiko Omura |
| On-Site Speaker (Planned) |
Vanadia Irisca Yussalla |
| Abstract Scope |
Effects of chromium (Cr) and molybdenum (Mo) on hydrogen absorption behavior in iron (Fe) have been investigated by determining the equilibrium concentration of hydrogen (CH) and calculating heat of solution of hydrogen (ΔH) in pure Fe, Fe-2.37Cr, and Fe-4.23Mo. Specimens were chemically polished prior to cathodic hydrogen charging. They were charged with hydrogen in solution of 0.1 N NaOH and 5 g/l NH4SCN at 30°C with different charging times to determine CH. To calculate ΔH, they were charged with hydrogen at various temperatures. As results, CH in pure Fe was the highest, whereas that in Fe-4.23Mo was the lowest. It was also found that ΔH of Fe-4.23Mo was the highest. Moreover, pure Fe specimen applied strain of 0.3 has higher negative value of ΔH than pure Fe. These findings indicate that solid solution of Mo in Fe decreases CH compared with that of Cr. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |