Abstract

This study focuses on the effects of a surface mechanical attrition treatment on the structural and mechanical behavior of arc-sprayed Ni–Cr coatings deposited on steel substrates. The surface of the as-sprayed and SMATed coatings was characterized by X-ray diffraction, Scanning Electron Microscopy, and non-contact profilometry. The coating porosity was evaluated by using image analysis software. The residual stresses were determined using X-ray diffraction with the sin2ψ. Indentation tests were carried out on the cross sections of the different coatings to evaluate their hardness. The wear properties of the coatings were assessed using a pin-on-disk tester at ambient temperature without lubrication. The results showed that surface mechanical attrition treatment (SMAT) induced a grain refinement on the coating surface due to severe plastic deformation, which was associated with a significant improvement of the mechanical properties.

Details

Title
Structural and Mechanical Properties of Arc-Sprayed Ni–Cr Coating Post-Treated by Surface Mechanical Attrition Treatment (SMAT)
Author
Aoudia, Karima 1 ; Lamri, Salim 2 ; Achache, Sofiane 2 ; Retraint, Delphine 3 ; Verdy, Christophe 4   VIAFID ORCID Logo  ; Langlade, Cécile 4 ; Azem, Said 5 ; Sanchette, Frédéric 2   VIAFID ORCID Logo 

1  ICD, P2MN, LASMIS, Université de Technologie de Troyes (UTT), CNRS, 10000 Troyes, France; Nogent International Center for CVD Innovation (NICCI), LRC CEA-ICD LASMIS, UTT Antenne de Nogent, pôle technologique de haute Champagne, 52800 Nogent, France; LEC2M, Université Mouloud Mammeri de Tizi-Ouzou, B.P. 17, Hasnaoua, 15000 Tizi-Ouzou, Algérie 
2  ICD, P2MN, LASMIS, Université de Technologie de Troyes (UTT), CNRS, 10000 Troyes, France; Nogent International Center for CVD Innovation (NICCI), LRC CEA-ICD LASMIS, UTT Antenne de Nogent, pôle technologique de haute Champagne, 52800 Nogent, France 
3  ICD, P2MN, LASMIS, Université de Technologie de Troyes (UTT), CNRS, 10000 Troyes, France 
4  Université Bourgogne Franche Comté, ICB UMR 6303 CNRS, site UTBM, 90100 Belfort, France 
5  LEC2M, Université Mouloud Mammeri de Tizi-Ouzou, B.P. 17, Hasnaoua, 15000 Tizi-Ouzou, Algérie 
First page
424
Publication year
2018
Publication date
2018
Publisher
MDPI AG
e-ISSN
20796412
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.3390/coatings8120424
ProQuest document ID
2582800148
Copyright
© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.