|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Environmentally Assisted Cracking: Theory and Practice
||Consequence of Hydrogen Desorption on Local Mechanical Properties and the Fracture Mechanisms of a Martensitic Steel
||Abdelali Oudriss, Hélène Morillot, Rémy Milet, Cyril Berziou, Stephane Cohendoz, Jean-Michel Sobrino, Juan Creus, Xavier Feaugas
|On-Site Speaker (Planned)
Increasing the mechanical properties and corrosion protection systems of the fastening elements is a major challenge for a better strength of components. However, this approach leads to a greater sensitivity of these elements to the hydrogen embrittlement. Indeed, the hydrogen can be introduced mainly through the surface treatment process and may lead to a significant decrease of mechanical strength. To remedy this, a baking step is applied to remove the hydrogen. However, because of a metallurgy increasingly complex, and high mechanical properties, the effectiveness of this step is questionable. So, in this study we are interested in the influence of time and temperature during the hydrogen baking process on the mechanical resistance of a martensitic steel. Thus, we have established a relationship between the microstructure, the hydrogen desorption kinetics and delayed fracture mechanisms. Furthermore, by adopting a local approach of fracture, we identified local mechanical characteristics sensitive to the hydrogen.
||Planned: Supplemental Proceedings volume