Investigation on the fretting fatigue behaviors of steel wires under different strain ratios

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 50N and 70N. Curves of Ft–D–N were drawn, and the dissipated energy was calculated through the curves of Ft–D. Morph...

Full description

Saved in:
Bibliographic Details
Published in:Wear 2013-06, Vol.303 (1-2), p.334-342
Main Authors: Zhang, De-kun, Geng, Hao, Zhang, Ze-feng, Wang, Da-gang, Wang, Song-quan, Ge, Shi-rong
Format: Article
Language:English
Subjects:
Applied sciences
Contact of materials. Friction. Wear
Dissipation
Exact sciences and technology
Fatigue
Fatigue (materials)
Fatigue life
Fatigue tests
Fretting
Fretting fatigue
Ft–D–N curve
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Slip
Steel wire
Strain
Strain ratio
Wear
Wire
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 50N and 70N. 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. •Fretting regime changed as the strain ratio decreased.•Dissipated energy was different corresponding to three kinds of fretting regimes.•Varied wear mechanisms as well as micro-cracks were observed in fretting scars.•Fretting fatigue life decreased with the decrease in strain ratio.•All fatigue fractures morphologies could be divided into three regions.
ISSN:0043-1648
1873-2577
DOI:10.1016/j.wear.2013.03.020