Influence of Stress Ratio and Contact Pressure on Fretting Fatigue Behavior of Modified 9Cr-1Mo Steel

Shiva, V.; Goyal, Sunil; Parthasarathi, N. L.; Das, C. R.; Kannan, Rangasayee; Nagesha, A.; Borah, Utpal; Albert, Shaju K.; Bhaduri, A.K.

doi:10.1007/s11665-021-05581-y

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…The "third body" layer generated by the wear debris prevented significant fretting damage on the specimen and maintained the stability of the fretting fatigue life when the contact pressure increased to the threshold value. Similar experimental results were also obtained on 9Cr-1Mo steel by Shiva et al 17 The contact pressure threshold was also observed in the torsional fretting fatigue of 316L austenitic stainless steel by Xu et al 18 and was attributed to the fact that high contact pressure enabled fatigue cracks to initiate closer to the surface of the specimen, leading to premature passivation of fatigue cracks. Nevertheless, other researches have revealed that the contact pressure dependency of fretting fatigue life varies.…”

Section: Introductionsupporting

confidence: 79%

Experimental and finite element analysis for evaluating influence of contact pressure on fretting fatigue mechanisms of A319‐T6 cast aluminum alloy

Liao,

Liu,

et al. 2023

Fatigue Fract Eng Mat Struct

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This paper evaluates the influence of contact pressure on the surface contact state, fretting damage degradation mechanism, crack initiation and propagation characteristics, and fretting fatigue life of A319‐T6 cast aluminum alloy in fretting fatigue test using bridge‐type fretting pad. For a certain range of contact pressure, the fretting fatigue life exhibits a trend of increasing and subsequently decreasing with increasing contact pressure. With finite element analysis, the fretting contact region can be divided into two characteristic zones according to the dynamic evolution of the contact status within one fatigue cycle. The contact pressure affects both the distribution of the two characteristic zones as well as the relative slip range, which results in distinct fretting damage mechanisms. The nucleation characteristics and propagation paths of fatigue cracks under three typical contact pressures were analyzed considering the effects of fretting damage and heterogeneous microstructures of the alloy, accounting for the contact pressure dependency of the fretting fatigue life.

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Section: Introductionsupporting

confidence: 79%

Experimental and finite element analysis for evaluating influence of contact pressure on fretting fatigue mechanisms of A319‐T6 cast aluminum alloy

Liao,

Liu,

et al. 2023

Fatigue Fract Eng Mat Struct

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“…An increase in fretting fatigue life by increasing surface hardness with ultrasonic nanocrystal surface modification was reported by Zhao et al [2]. An increase in life with an increasing stress ratio for a given maximum cyclic stress has been reported [3,4].…”

Section: Introductionmentioning

confidence: 84%

Fretting fatigue behaviour of Ti–6Al–4V in contact with Alloy 718

Srivathsan¹,

Raman²

2021

Tribology - Materials, Surfaces & Interfaces

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In studies on a material fretted with different contact pad materials having different hardness values, there will be effect of both chemical composition and hardness. In the present work, the effect of hardness was studied by keeping the chemical composition of the contact pad material the same. Test samples were made of Ti-6Al-4V and fretting pads were made of Alloy 718. By heat treatments (annealing and ageing), the hardness of the pads was changed. The effect of hardness of pads was observed only at higher contact pressure of 175 MPa and lower cyclic stresses, where annealed pads restricted the life of Ti-6Al-4V samples compared to aged pads. This is because the relatively softer Alloy 718 pads in annealed condition had relatively higher adhesion to the Ti-6Al-4V samples leading to higher tangential force coefficient values compared to that of harder pads in the aged condition.

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Influence of various contact-materials on the fretting fatigue life of P91 steel

Shiva,

Parthasarathi,

Kannan

et al. 2024

Engineering Failure Analysis

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Influence of Stress Ratio and Contact Pressure on Fretting Fatigue Behavior of Modified 9Cr-1Mo Steel

Cited by 6 publications

References 26 publications

Experimental and finite element analysis for evaluating influence of contact pressure on fretting fatigue mechanisms of A319‐T6 cast aluminum alloy

Experimental and finite element analysis for evaluating influence of contact pressure on fretting fatigue mechanisms of A319‐T6 cast aluminum alloy

Fretting fatigue behaviour of Ti–6Al–4V in contact with Alloy 718

Influence of various contact-materials on the fretting fatigue life of P91 steel

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