Wear behavior of TiAlN coated austempered ductile iron

D.A. COLOMBO; R.C. DOMMARCO; A.D. MANDRI; J.M. MASSONE

Florianópolis

Conferencia; 3rd International Brazilian Conference on Tribology ? TriboBR2018; 2018

Austempered ductile iron (ADI) is an attractive material because of its excellent combination of high strength and ductility with good wear resistance. In addition, the manufacturing cost and density of ADI are lower than forged or cast steels.Furthermore, advances in the vacuum deposition technologies allow to apply hard coatings without altering the ausferritic microstructure of ADI [1], broadening its field of use to applications requiring even better wear resistance.This work studies the surface properties and wear behavior of ADI samples coated with TiAlN films synthesized by cathodic arc deposition (CAD) using an industrial device. Wear was evaluated by means of rolling contact fatigue (RCF) and sliding tests.