Surface modification of an austenitic stainless steel wire by a multi-pulse treatment with a high-power electric current

Surface modification of an austenitic stainless steel wire by a multi-pulse treatment with a high-power electric current

The skin effect caused by high-power electric pulses can be used for modification of the surface microstructure in metallic materials. The electric current pulses of high amplitude and short rapid surface heating followed by melting and rapid solidification due to heat exchange with the bulk. New hi...

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Bibliographic Details
Published in:Journal of materials science Vol. 52; no. 13; pp. 8007 - 8015
Main Authors: Nürnberger, F., Gerstein, G., Dalinger, A., Thürer, S. E., Vinogradov, A., Feldhoff, A., Maier, H. J.
Format: Journal Article
Language:English
Published: New York Springer US 01-07-2017
Springer
Springer Nature B.V
Subjects:
Amorphization
Austenitic stainless steels
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Cooling rate
Crystallography and Scattering Methods
Current pulses
Electric currents
Electric pulses
Electric wire
Heat exchange
Heating
Materials Science
Mechanical twinning
Microstructure
Original Paper
Polymer Sciences
Rapid solidification
Skin effect
Solid Mechanics
Stainless steel
Steel wire
Surface layers
Transmission electron microscopy
Electric Pulse Treatment
Skin Effect
Emissivity Coefficient
Electric Current Pulse
SUS304 Stainless Steel
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Summary:The skin effect caused by high-power electric pulses can be used for modification of the surface microstructure in metallic materials. The electric current pulses of high amplitude and short rapid surface heating followed by melting and rapid solidification due to heat exchange with the bulk. New high-current multi-pulse equipment was engineered and used for the surface modification of a stainless steel. The microstructure was investigated by transmission electron microscopy as a function of the distance from the surface. Rapid surface heating and high cooling rate caused drastic changes in the initial austenitic structure, amorphization of the surface layer and pronounced mechanical twinning in the subsurface region.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-017-1003-z