Structural and Mechanical Properties of Arc-Sprayed Ni–Cr Coating Post-Treated by Surface Mechanical Attrition Treatment (SMAT)
Year: 2018
Type: article
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.
Source: Coatings
Institutions: Centre National de la Recherche Scientifique, Université de Technologie de Troyes, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée, Mouloud Mammeri University of Tizi-Ouzou, Université de technologie de belfort-montbéliard, Université Bourgogne Franche-Comté, Laboratoire Interdisciplinaire Carnot de Bourgogne
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,132
OpenAlex ID: W2903199263