Metallurgical factors in the fretting-fatigue behaviour of 70/30 brass and 0.7% carbon steel

Wharton, M.H.; Taylor, D.E.; Waterhouse, R.B.

doi:10.1016/0043-1648(73)90089-6

Cited by 39 publications

(4 citation statements)

References 2 publications

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“…The use of a Kitagawa–Takahashi diagram is consistent with the idea that catastrophic failure is controlled by whether fretting or fretting fatigue is severe enough to nucleate and grow a crack to a critical size 35,43 , 49–54 . The critical crack length is dependent on the material resistance to both plastic deformation and the growth of small cracks as well as the decreasing driving force due to both the diminishing fretting stresses with increasing crack length and the compressive residual stress contributions of surface treatments such as shot peening 29,38 .…”

Section: Failure Predictionsupporting

confidence: 68%

“…Since the coefficient of friction in fretting is much higher than typical rolling contact fatigue, cyclic plastic strain ratchetting would appear to be the dominant nucleation mechanism in fretting fatigue. In addition, a material that has been work‐hardened, without any significant change in the near‐surface residual stress field, appears to be more susceptible to fretting fatigue than its annealed counterpart 43 . This observation also supports a ductility exhaustion mechanism for crack nucleation.…”

Section: Resultsmentioning

confidence: 61%

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Fretting fatigue crack nucleation in Ti–6Al–4V

Wallace¹,

Neu

2003

Fatigue Fract Eng Mat Struct

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Fretting fatigue crack nucleation in Ti−6Al−4V when fretted against itself is investigated to determine the influence of contact pressure, stress amplitude, stress ratio, and contact geometry on the degradation process. For the test parameters considered in this investigation, a partial slip condition generally prevails. The resulting fatigue modifying factors are 0.53 or less. Cycles to crack nucleation, frictional force evolution, crack orientations and their relationship to the microstructure are reported. The crack nucleation process volume is of the same order as the microstructural length scales with several non‐dominant cracks penetrating 50 μm or less. The effective coefficient of friction increases during early part of fretting. Observations suggest that cyclic plastic deformation is extensive in the surface layers and that cyclic ratchetting of plastic strain may play a key role in nucleation of the fretting cracks. A Kitagawa–Takahashi diagram is used to relate the depth of fretting damage to the modifying factor on fatigue life.

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Section: Failure Predictionsupporting

confidence: 68%

Section: Resultsmentioning

confidence: 61%

Fretting fatigue crack nucleation in Ti–6Al–4V

Wallace¹,

Neu

2003

Fatigue Fract Eng Mat Struct

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“…The detrimental effect of fretting is more important at low fatigue stress levels, since the fretting effect promotes a decrease in the crack initiation period, and this initiation phase is already very low for high fatigue stresses. These results agree very well with those presented by Reeves and Hoeppner [9], and with other findings reported for different materials [10,11].…”

Section: Fretting Fatigue 331 Fatigue Stress Rangesupporting

confidence: 83%

Fretting fatigue of zinc coated low carbon steel EN H320 M

Ramalho

Correia

Costa

2000

Tribology International

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The object of the present study was to investigate the influence of zinc coatings on steel sheets during fretting fatigue and fatigue tests. The influence of the fatigue stress range, normal pressure and amplitude of slip, on the fracture life was studied for both coated and uncoated EN H320 M steel. The wear produced by fretting was measured and compared with the fracture life evolution for different values of slip amplitude. The wear scars and the fracture surfaces were examined by scanning electron microscopy to identify the degradation mechanism. Although zinc films do not influence the fatigue life of the tested steel, when fretting is superposed on to a fatigue stress the coating markedly improves the fracture life.

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“…In the case of the double contact pad with 4mm gap, the maximum tangential stress range was nearly the same as that obtained with the single contact pad case. It has been reported that a fretting fatigue crack nucleates from the point of the maximum tangential stress [5,6]. Therefore, in fretting flrtigue, tangentia] stress plays a dominant role for early crack nucleation and accelerating of crack growing.…”

Section: Erkct Ofsingle and Double Co]tact Pads On Tangential Stress ...mentioning

confidence: 99%