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

被引：0
|
作者：
F. Nürnberger
G. Gerstein
A. Dalinger
S. E. Thürer
A. Vinogradov
A. Feldhoff
H. J. Maier
机构：
[1] Leibniz Universität Hannover,Institut für Werkstoffkunde (Materials Science)
[2] Leibniz Universität Hannover,Institut für Physikalische Chemie und Elektrochemie
[3] Norwegian University of Science and Technology – NTNU,Department of Engineering Design and Materials
来源：
Journal of Materials Science | 2017年 / 52卷
关键词：
Skin Effect; Emissivity Coefficient; Electric Current Pulse; SUS304 Stainless Steel; Electric Pulse Treatment;
D O I：
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中图分类号：
学科分类号：
摘要：
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.
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页码：8007 / 8015
页数：8
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