Microstructural characterization of pulsed plasma nitrided 316L stainless steel

被引：56
作者：
Asgari, M. [2 ]
Barnoush, A. [1 ]
Johnsen, R. [2 ]
Hoel, R. [3 ]
机构：
[1] Univ Saarland, D-6600 Saarbrucken, Germany
[2] Norwegian Univ Sci & Technol, N-7034 Trondheim, Norway
[3] MOTecH Plasma Co, Oslo, Norway
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 529卷
关键词：
Pulsed plasma nitriding; Stainless steel 316L; Nanoindentation; EBSD; Microanalysis; Austenite; DISLOCATION NUCLEATION; EXPANDED AUSTENITE; NI-AFM; HARDNESS; DIFFRACTION; INDENTATION; HYDROGEN;
D O I：
10.1016/j.msea.2011.09.055
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Pulsed plasma nitriding (PPN) treatment is one of the new processes to improve the surface hardness and tribology behavior of austenitic stainless steels. Through low temperature treatment (<440 degrees C), it is possible to obtain unique combinations of wear and corrosion properties. Such a combination is achieved through the formation of a so-called "extended austenite phase". These surface layers are often also referred to as S-phase, m-phase or gamma-phase. In this work, nitrided layers on austenitic stainless steels AISI 316L (SS316L) were examined by means of a nanoindentation method at different loads. Additionally, the mechanical properties of the S-phase at different depths were studied. Electron back-scatter diffraction (EBSD) examination of the layer showed a high amount of plasticity induced in the layer during its formation. XRD results confirmed the formation of the S-phase, and no deleterious CrN phase was detected. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：425 / 434
页数：10
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