Rolling Contact Fatigue (RCF) resistance of Austempered Ductile Iron (ADI)

The present work reports on the Rolling Contact Fatigue (RCF) resistance of Austempered Ductile Iron (ADI) as evaluated by using a ball–rod rolling contact fatigue tester. The tests were carried out until a spall was detected with a load ratio p 0/ k k=6, where p 0 is the maximum Hertz stress and k...

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Veröffentlicht in:	Wear 1998-10, Vol.221 (1), p.69-74
Hauptverfasser:	Dommarco, R.C, Bastias, P.C, Dall'O, H.A, Hahn, G.T, Rubin, C.A
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Austempered Ductile Iron (ADI) Contact fatigue Contact of materials. Friction. Wear Electron scanning microscopy Exact sciences and technology Hertz stress Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Rolling Contact Fatigue (RCF)
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Zusammenfassung:	The present work reports on the Rolling Contact Fatigue (RCF) resistance of Austempered Ductile Iron (ADI) as evaluated by using a ball–rod rolling contact fatigue tester. The tests were carried out until a spall was detected with a load ratio p 0/ k k=6, where p 0 is the maximum Hertz stress and k k the kinematic shear yield stress. The results obtained for the RCF tests were compared with the properties of AISI 440C and SAE 52100 bearing steels. The spalls were observed using optical and electron scanning microscopy. The microstructure was found to have a strong influence in RCF results. It is concluded that ADI has good resistance to crack propagation but low resistance to crack nucleation. The RCF resistance of ADI under the present experimental conditions is not satisfactory.
ISSN:	0043-1648 1873-2577
DOI:	10.1016/S0043-1648(98)00259-2