Plasma nitriding of AISI 2205 steel: effects of surface mechanical attrition treatment and chemical etching

2015 ◽  
Vol 32 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Atul M. Gatey ◽  
Santosh S. Hosmani ◽  
Shashi B. Arya ◽  
Carlos A. Figueroa ◽  
Rajkumar P. Singh
Keyword(s):  
Chemical Etching ◽  
Plasma Nitriding ◽  
Surface Mechanical Attrition Treatment ◽  
Mechanical Attrition

Role of surface mechanical attrition treatment and chemical etching on plasma nitriding behavior of AISI 304L steel

2016 ◽  
Vol 304 ◽  
pp. 413-424 ◽  
Author(s):  
Atul M. Gatey ◽  
Santosh S. Hosmani ◽  
Carlos A. Figueroa ◽  
Shashi B. Arya ◽  
Rajkumar P. Singh
Keyword(s):  
Chemical Etching ◽  
Plasma Nitriding ◽  
Surface Mechanical Attrition Treatment ◽  
Aisi 304L ◽  
Mechanical Attrition ◽  
304L Steel

Electron Backscatter Diffraction and Transmission Kikuchi Diffraction Analysis of an Austenitic Stainless Steel Subjected to Surface Mechanical Attrition Treatment and Plasma Nitriding

2015 ◽  
Vol 21 (4) ◽  
pp. 919-926 ◽  
Author(s):  
Gwénaëlle Proust ◽  
Delphine Retraint ◽  
Mahdi Chemkhi ◽  
Arjen Roos ◽  
Clemence Demangel
Keyword(s):  
Stainless Steel ◽  
Surface Properties ◽  
Electron Backscatter Diffraction ◽  
Plasma Nitriding ◽  
Surface Mechanical Attrition Treatment ◽  
Material Surface ◽  
Mechanical Attrition ◽  
Electron Backscatter ◽  
Nanocrystalline Layer ◽  
Backscatter Diffraction

AbstractAustenitic 316L stainless steel can be used for orthopedic implants due to its biocompatibility and high corrosion resistance. Its range of applications in this field could be broadened by improving its wear and friction properties. Surface properties can be modified through surface hardening treatments. The effects of such treatments on the microstructure of the alloy were investigated here. Surface Mechanical Attrition Treatment (SMAT) is a surface treatment that enhances mechanical properties of the material surface by creating a thin nanocrystalline layer. After SMAT, some specimens underwent a plasma nitriding process to further enhance their surface properties. Using electron backscatter diffraction, transmission Kikuchi diffraction, energy dispersive spectroscopy, and transmission electron microscopy, the microstructural evolution of the stainless steel after these different surface treatments was characterized. Microstructural features investigated include thickness of the nanocrystalline layer, size of the grains within the nanocrystalline layer, and depth of diffusion of nitrogen atoms within the material.

Plasma nitriding of AISI 304 stainless steel: Role of surface mechanical attrition treatment

2013 ◽  
Vol 85 ◽  
pp. 38-47 ◽  
Author(s):  
T. Balusamy ◽  
T.S.N. Sankara Narayanan ◽  
K. Ravichandran ◽  
Il Song Park ◽  
Min Ho Lee
Keyword(s):  
Stainless Steel ◽  
Plasma Nitriding ◽  
304 Stainless Steel ◽  
Surface Mechanical Attrition Treatment ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Mechanical Attrition

Ultrasonic Evaluation of Compressive Residual Stress of Surface Treated Metals

2005 ◽  
Vol 490-491 ◽  
pp. 184-189 ◽  
Author(s):  
Farid Belahcene ◽  
Xiaolai Zhou ◽  
Jian Lu
Keyword(s):  
Experimental Data ◽  
Residual Stresses ◽  
Nondestructive Evaluation ◽  
Subsurface Layer ◽  
Surface Mechanical Attrition Treatment ◽  
Shallow Subsurface ◽  
Ultrasonic Evaluation ◽  
Mechanical Attrition ◽  
Machine Parts ◽  
Compressive Residual Stresses

Shot peening is an effective method of improving fatigue performance of machine parts in the industry by producing a thin surface layer of compressive residual stresses that prevents crack initiation and retards crack growth during service. Nondestructive evaluation of the prevailing compressive residual stresses in the shallow subsurface layer is realized by the critically refracted longitudinal (Lcr) waves. This paper presents experimental data obtained on SMAT (surface mechanical attrition treatment) steel alloy S355 sample. Comparative travel-time shows that there are statistically significant differences in treated and untreated specimen. With knowledge of the acoustoelastic constants which are obtained by a test calibration, the experimental data indicates that compressive residual stresses are distributed near subsurface (hundreds of micron). These stress results show that the Lcr technique is efficient for evaluation of residual stresses after the surface treatment.

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