Effect of nanostructure on low temperature glow discharge nitriding of an austenitic stainless steel

Paweł Izdebski 

Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland

Abstract

In this work, the effect of nano-grain structure refinement in 316LVM austenitic stainless steel on the layers formed in glow-discharge low-temperature nitriding process was investigated. The material used in this work was 316LVM ASS in the following microstructural states: coarse grained (after annealing), plastic deformed (after conventional extrusion), nanocrystalline (after hydrostatic extrusion). All samples were subjected to glow-discharge low-temperature nitriding process at a temperature of 350 °C.

The results show significant influence of the structure nanorefinement on the nature of layers formed in low-temperature nitriding process, in particular on the surface topography, thickness, phase composition and the content of nitrogen. The effect of nanoscale structure on diffusion and surface layers formation is discussed.

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Presentation: Poster at Warsaw and Karlsruhe Nanotechnology Day, by Paweł Izdebski
See On-line Journal of Warsaw and Karlsruhe Nanotechnology Day

Submitted: 2011-07-26 16:14
Revised:   2011-07-26 16:14
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