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On the damage mechanisms of bending fretting fatigue
- Source :
- Tribology International. 76:133-141
- Publication Year :
- 2014
- Publisher :
- Elsevier BV, 2014.
-
Abstract
- The bending fretting fatigue tests of 316L austenitic stainless steel, 7075 aluminum alloy, LZ50 steel and 30CrNiMo8 steel have been carried out under different bending stresses and normal contact stresses. The S ā N curves of varied materials are set up accordingly, which present the shape like the Greek letter āeā and can be divided into three running regimes similar to fretting wear. Based on the OM, SEM, EDS and TEM, the fretting fatigue damages have been analyzed in detail. The fretting wear damage mechanisms of fretting zone are abrasive wear, oxidative wear and delamination, a damage physical model in the MFR is proposed. According to the TEM results, two crack initiation mechanisms have been proposed based on different material characteristics.
- Subjects :
- Materials science
Bending (metalworking)
Mechanical Engineering
Alloy
Delamination
Metallurgy
Abrasive
chemistry.chemical_element
Fretting
Surfaces and Interfaces
engineering.material
Surfaces, Coatings and Films
chemistry
Mechanics of Materials
Aluminium
engineering
Austenitic stainless steel
Dislocation
Subjects
Details
- ISSN :
- 0301679X
- Volume :
- 76
- Database :
- OpenAIRE
- Journal :
- Tribology International
- Accession number :
- edsair.doi...........7905a0789b8e6f67bed6cbe0ffb33297