Abstract
Fretting involves contact between surfaces undergoing small cyclic relative tangential motion. The resultant wear and initiation of fatigue cracks are strongly influenced by the nature of the surface. The induction hardening treatment is an established surface hardening treatment, which produces both local hardness and the development of compressive stresses in the surface. The present investigation is designed to assess the effect of the induction hardening treatment on the fretting fatigue behaviour of AISI 1045 steel under two different contact pressures (100 and 200 MPa). The results showed that the plain and fretting fatigue behaviours of induction hardened AISI 1045 steel were improved compared to untreated. However, the effect of contact pressure in the range of the present study was not significant for both untreated and induction hardened specimens.

Key words
fatigue, fretting fatigue, induction hardening

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