Field of Expertise: Advanced Material Science

Impact Toughness of Steel after Electrochemical Hydrogenation
Michael Freiberger, Rudolf Vallant
Institut für Werkstoffkunde und Schweißtechnik
11:00 - 11:20 Thursday 23 October 2014 Rechbauerstrasse 12, HSII

Hydrogen Embrittlement (HE) is a field of corrosion, which needs attention throughout materials science, especially for steel. The causes are widespread as are the effects, perhaps resulting in severe failures. Mechanisms and consequences of HE are commonly known, but each case may need a proper analysis, as the Hydrogen source is unknown and the failure might not be clear or a combination with other corrosion effects, e.g. Stress Corrosion Cracking. HE is a daily issue, occuring at welding, pickling, galvanizing and other processes. This work was based on the goal to try out and establish a simple method of artificially charging specimens with Hydrogen for several material tests like Charpy-V Notch or Tensile test. A common introduction to the theory behind HE should be given to allow an overview on the topic with its far-ranging origins and consequences. Afterwards experimental procedure and its results are shown. Furthermore, the work is a basis for a following master thesis.