The effect of surface mechanical attrition treatment on low temperature plasma nitriding of an austenitic stainless steel

被引：70
|
作者：
Chemkhi, M. [1 ]
Retraint, D. [1 ]
Roos, A. [1 ]
Garnier, C. [1 ]
Waltz, L. [2 ]
Demangel, C. [3 ]
Proust, G. [4 ]
机构：
[1] Univ Technol Troyes, Charles Delaunay Inst, LASMIS, UMR STMR CNRS 6279, F-10004 Troyes, France
[2] Lab Mecan & Genie Civil LMGC Montpellier, F-34090 Montpellier, France
[3] CRITT MDTS, F-08000 Charleville Mezieres, France
[4] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia
来源：
SURFACE & COATINGS TECHNOLOGY | 2013年 / 221卷
关键词：
Surface diffusion; SMAT; Nanocrystalline materials; Plasma nitriding; Austenitic stainless steels; IMMERSION ION-IMPLANTATION; EXPANDED AUSTENITE; NITROGEN; LAYER; NANOCRYSTALLIZATION; BEHAVIOR;
D O I：
10.1016/j.surfcoat.2013.01.047
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The combined effect of superficial nanoaystallisation by SMAT (Surface Mechanical Attrition Treatment) followed by plasma nitriding on the mechanical properties of a medical grade austenitic stainless steel was studied. SMAT conditions were optimised to enhance nitrogen diffusion. Experimental observations (energy dispersive X-ray spectroscopy profiles, cross-sectional optical micrographs, phase analysis by X-ray diffraction and micro-hardness profiles) show that polishing away a very thin layer after SMAT and before nitriding significantly improves nitrogen diffusion into the substrate, yielding a 50% thicker nitrided layer. Possible causes for this improvement are discussed. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：191 / 195
页数：5
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