Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7004871 | Wear | 2013 | 9 Pages |
Abstract
The fretting fatigue tests of steel wires were performed on the self-made fretting fatigue test equipment under different strain ratios ranging from 0.90 to 0.70 with contact loads of 50Â N and 70Â N. Curves of Ft-D-N were drawn, and the dissipated energy was calculated through the curves of Ft-D. Morphological features of fretting scar and fracture surface were observed by scanning electron microscopy (SEM). The results reveal that as the strain ratio decreased, the fretting regime changed from partial slip regime to mixed regime and slip regime. Shorter fretting fatigue life, higher wear coefficient were induced by a lower strain ratio. The curves of dissipated energy corresponding to three kinds of fretting regimes were different from each other. Morphologies of adhesive wear, abrasive wear and fatigue wear as well as accumulation of plastic deformation and micro-cracks were observed in fretting scars. All fatigue fractures in different fretting regimes could be divided into three regions.
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Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
De-kun Zhang, Hao Geng, Ze-feng Zhang, Da-gang Wang, Song-quan Wang, Shi-rong Ge,