Influence of Machine Hammer Peening on the Tribological Behavior and the Residual Stresses of Wear Resistant Thermally Sprayed Coatings

Rausch, S.1, a; Wiederkehr, P.1, b; Biermann, D.1, c; Zabel, A.1, d; Selvadurai, U.2; Hagen, L.2; Tillmann, W.2

1)
Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund
2)
Lehrstuhl für Werkstofftechnologie LWT, Technische Universität Dortmund, Leonhard-Euler-Str. 2, 44227 Dortmund

a) rausch@isf.de; b) wiederkehr@isf.de; c) biermann@isf.de; d) zabel@isf.de

Kurzfassung

WC-W2C iron based cermet coatings are widely used in the field of wear protection. In surface engineering, machine hammer peening (MHP) is a novel surface treatment technology, which enhances the surface properties, especially for surfaces in tribological contact. In this study, the wear behavior of peened WC-W2C FeCrCMnSi arc sprayed coatings is characterized and compared to conventional coatings under as-sprayed conditions. The resulting strain hardening effects were measured by mechanical response using nanoindentation. In addition, residual stresses at the surfaces were determined using X-ray diffraction and the sin2ψ method.

Schlüsselwörter

Machine Hammer Peening, Coating, Residual stress

Veröffentlichung

Procedia CIRP, 45 (2016), S. 275-278, doi: 10.1016/j.procir.2016.02.059