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AN EXPERIMENTAL STUDY OF FRETTING BY MEANS OF X‐RAY DIFFRACTION
Author(s) -
Farrahi G.H.,
Maeder G.
Publication year - 1992
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1992.tb00018.x
Subject(s) - fretting , materials science , residual stress , softening , hardening (computing) , diffraction , work hardening , composite material , surface layer , surface finish , metallurgy , layer (electronics) , microstructure , optics , physics
Abstract This paper introduces a new method of investigation in the field of fretting. This method employs X‐ray diffraction for the characterization of surface layer damage through residual stresses and work‐hardening by tribologjcal action. The effect of hardness and material residual stresses upon the state of the surface have been studied. The results showed that fretting, being a surface phenomenon, created work‐hardening of soft material or work‐softening of hard material in the near‐surface layers. When the initial residual stresses were high, fretting could not modify them because they had already reached the saturation limit. A Pole figure shows that fretting modified the texture of the specimen surface.