MATEC Web Conf.
Volume 190, 20185th International Conference on New Forming Technology (ICNFT 2018)
|Number of page(s)||8|
|Published online||18 September 2018|
The influence of microstructure deformation on the corrosion resistance of cold formed stainless steel
UFT, Center for Environmental Research and Sustainable Technology, Leobener Strasse 6, 28359 Bremen, Germany
2 bime, Bremen Institute for Mechanical Engineering, Badgasteiner Str. 1, 28359 Bremen, Germany
3 Leibniz Institute for Materials Engineering IWT, Badgasteiner Str. 3, 28359 Bremen, Germany
4 University of Bremen
5 MAPEX Center for Materials and Processing
Corresponding author: firstname.lastname@example.org
Rotary swaging is an incremental cold forming process to produce axisymmetric workpieces from rods and tubes. The process also induces changes of the microstructure of the material depending on the process parameters. This in turn influences the mechanical properties like hardness as well as the electrochemical properties. As a result of changed electrochemical properties, the passivity of the material and thus the corrosion behavior changes. In order to investigate the influence of rotary swaging on the corrosion behavior of the stainless steel AISI304, deformed micro parts are electrochemically analyzed. The measurements reveal a dependency of corrosion rate and impedance on both feed velocity and final diameter of the rotary swaging process. A higher feed velocity decreases the corrosion rate and increases the impedance indicating a better resistance against corrosion as a side effect of rotary swaging.
Key words: Cold forming / Stainless steel / Corrosion
© The Authors, published by EDP Sciences, 2018
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