Comparison of Shot Peening and Nitriding Surface Treatments under Complex Fretting Loadings

Krzysztof Kubiak; Siegfried Fouvry; Bogdan Wendler

doi:10.4028/www.scientific.net/MSF.513.105

Paper Titles

Surface Heat Treatment Design Methodology of Large-Scale Castings
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Technological Surface Layer Selection for Small Module Pitches of Gear Wheels Working under Cyclic Contact Loads
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Change of Micromechanical Properties of Polyethylene Induced by a Tribological Process in Polymer/Metal System
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Growth Structures and Phase Formation in Industrially Room-Temperature Pulsed Laser Deposited FCC Ti-Based Nitride Coatings
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Comparison of Shot Peening and Nitriding Surface Treatments under Complex Fretting Loadings
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Structure and Properties of the Wear Resistant Coatings Obtained in the PVD and CVD Processes on Tool Ceramics
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Oxidation Resistance of Nanocrystalline Microalloyed γ–TiAl Coatings under Isothermal Conditions and Thermal Fatigue
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Application of ¹⁸O₂ Exposure–Based Approach to Study the Failure Mechanisms of Oxide Scales on Alumina Formers
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Strain Induced Up-Hill Diffusion of Hydrogen in Al
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HomeMaterials Science ForumMaterials Science Forum Vol. 513Comparison of Shot Peening and Nitriding Surface...

Comparison of Shot Peening and Nitriding Surface Treatments under Complex Fretting Loadings

Abstract:

Considered as a plague for numerous industrial assemblies, fretting associated with small oscillatory displacements is encountered in all quasi-static contacts submitted to vibrations. According to the sliding conditions, fretting cracks and/or fretting wear can be observed in the contact area. On the other hand an important development has been achieved in the domain of surface engineering during the past three decades and numerous new surface treatments and coatings are now available. Therefore there is a critical challenge to evaluate the usefulness of these new treatments and/or coatings against fretting damage. To achieve this objective, a fast fretting methodology has been developed. It consists in quantifying the palliative friction, cracking and wear responses through a very small number of fretting tests. With use of defined quantitative variables, a normalized polar fretting damage chart approach is introduced. Finally, to evaluate the performance of the assemblies after these protective surface treatments under complex fretting loadings, an original sequence of partial slip and gross slip sliding procedure has been applied. It has been demonstrated that performing of a very short sequence of gross slip fretting cycles can critically decrease the resistance of the treated surfaces against cracking failures activated under subsequent partial slip loadings.