Effect of contact pressure on high temperature fretting fatigue

Satoh, Toyoichi; Mutoh, Yoshiharu; Yada, Y.; Takano, Alfa Emília; Tsunoda, Eiji

doi:10.1016/0142-1123(94)90091-4

Cited by 3 publications

(2 citation statements)

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“…Mall et al 12 investigated the fretting fatigue behavior of a nickel-base superalloy, IN100 at 600 C and concluded that plain fretting fatigue performance improved at 600 C in comparison to those at room temperature. Satoh et al 13 conducted fretting fatigue tests under various levels of contact pressure at room and elevated temperatures using 12Cr-Mo-W-V and 11Cr-Mo-V-Nb steam turbine steel. They believed that the effect of fretting on fatigue life seemed to appear within 30% or 40% of fretting fatigue life regardless of the contact pressure level and test temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Satoh et al. 13 conducted fretting fatigue tests under various levels of contact pressure at room and elevated temperatures using 12Cr-Mo-W-V and 11Cr-Mo-V-Nb steam turbine steel. They believed that the effect of fretting on fatigue life seemed to appear within 30% or 40% of fretting fatigue life regardless of the contact pressure level and test temperature.…”

Section: Introductionmentioning

confidence: 99%

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Fretting and plain fatigue behavior of Al 7075-T651 at elevated temperatures

Majzoobi

Soori

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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Fretting fatigue behavior of Al 7075-T651 is investigated at temperatures of 20 ℃, 150 ℃, 250 ℃ and 350 ℃ and at different stress levels. The results show that: (a) fatigue life increases from 15% to 160% for low stresses and reduces from −20% to −40% for higher stresses and (b) fretting fatigue life increases from 155% to 290% for low stress levels and reduces from −12% to −65% for high stress levels. All life changes have been measured with respect to the lives at ambient temperature. It is believed that under low stresses, the effect of glaze oxide layer created through surface oxygen absorption prevails and gives rise to improvement of plain and fretting fatigue of material at elevated temperatures. Precipitation and solid solution hardening and good lubrication of the oxide layer are the main reasons for this improvement. For the higher stresses, 180, 200 and 280 MPa, the oxide layer breaks down and the degradation due to reduction in ultimate strength dominates the fatigue behavior of material and diminishes the fatigue lives. Fractography of specimens reveals brittle fracture mode in the fracture surface regardless of the test temperature. Optical microscopy of specimens shows more germination of precipitates at lower temperatures and shorter aging durations and more growth of precipitates for higher temperatures and longer aging durations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fretting and plain fatigue behavior of Al 7075-T651 at elevated temperatures

Majzoobi

Soori

2013

Proceedings of the Institution of Mechanical Engineers, Part J:

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Mechanisms of Fretting Fatigue

Mutoh¹

1995

JSME international journal. Ser. A, Mechanics and material engi

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Experimental and numerical investigation into effect of elevated temperature on fretting fatigue behavior

Talemi¹,

Soori²,

Wahab³

et al. 2011

IJSMED

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t Fretting fatigue damage occurs in contacting parts when they are subjected to fluctuating loadingsand sliding movements at the same time. This phenomenon may occur in many applications such asbearings/ shafts, bolted and riveted connections, steel cables, and steam and gas turbines. In this paper,the effect of elevated temperature on fretting fatigue life of Al7075-T6 is investigated using a new device forfretting fatigue tests with variable crank shaft mechanism. Also a finite element modeling method was usedto estimate crack propagation lifetime in aluminum alloy, Al7075-T6 specimens at elevated temperatureunder fretting condition. In this method, shear and normal stresses that are caused by contact load areupdated at each crack growth increment. Finally, a comparison between the experimental and numericalresults is done in order to evaluate the FE simulation.Department of mechanical engineering, Islamic Azad University, Takestan Branch, Takestan, IranThe experimental results show that: (i) fretting fatigue life of the material increases with temperature up to350°C by 180% for low stresses and decreases by 40% for high stresses, (ii) this fashion of variation offretting fatigue life versus temperature is believed to be due to degradation of material properties whichoccurs by overaging and wear resistance increase due to oxidation of aluminum alloy. While overaginggives rise to degradation of mechanical strength of material and hence the reduction of its fretting fatiguelife, surface oxidation of the specimens brings some improvement of fatigue behavior of the material.Metallurgical examination of the specimens reveals that temperature results in precipitation of impurities ofal-7075-T6. The size of precipitated impurities and their distances gets bigger as temperature increases.This could be a reason for material degradation of specimens which are exposed to heating for longer timeduration.

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Effect of contact pressure on high temperature fretting fatigue

Cited by 3 publications

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Fretting and plain fatigue behavior of Al 7075-T651 at elevated temperatures

Fretting and plain fatigue behavior of Al 7075-T651 at elevated temperatures

Mechanisms of Fretting Fatigue

Experimental and numerical investigation into effect of elevated temperature on fretting fatigue behavior

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