Influence of heat treatment on the microstructure and corrosion resistance of martensitic stainless steel
Source abstract
Abstract
Heat Treatment of martensitic stainless steels is used to increase the hardness that is caused by several microstructure changes. But such a treatment does affect both mechanical properties and corrosion resistance. Existing studies about the effect of austenitizing on the material properties and the corrosion resistance show contradictory results. Here we reveal the different effects of austenitizing on the passive layer of stainless steel and thus the corrosion resistance, thermodynamic phase calculations, microstructure investigations and various electrochemical measurements are performed. By potentiodynamic polarization scans the pitting potential, the critical pitting potential and the corrosion current are determined. Impedance spectroscopy are used to gain deeper insight into the passive layer properties. The results show a strong dependency of the corrosion behavior on the heat treatment where the governing corrosion mechanism are affected differently.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemical Process Engineering Group (CVT), University of Bremen 1 , Leobener Strasse 6, 28359 Bremen, Germany
Leibniz Institute for Materials Engineering IWT, University of Bremen 2 , Badgasteiner Str. 3, 28359 Bremen, Germany
Funding
Deutsche Forschungsgesellschaft
References (23)
Show source-provided references
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