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

页码：191 / 195

页数：5

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