Residual stresses and fatigue performance

James, M.N.; Hughes, D.J.; Chen, Z.; Lombard, H.; Hattingh, D.G.; Asquith, David; Yates, J. R.; Webster, Peter J.

doi:10.1016/j.engfailanal.2006.02.011

Cited by 175 publications

(98 citation statements)

References 10 publications

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“…The beneficial effect of shot peening is a result of coupling of the residual stresses and strain hardening [7] although the relative beneficial contributions of each are still controversial [13]. It has been reported that the beneficial effect of strain hardening is in increasing the initiation life since high dislocation densities in the cold worked region result in higher yield stresses [7,14] and thus lower plastic strain amplitudes under stress controlled cycling [15];…”

Section: Introductionmentioning

confidence: 99%

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The effect of shot peening on notched low cycle fatigue

Soady

Mellor

Shackleton

et al. 2011

Materials Science and Engineering: A

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The improvement in low cycle fatigue life created by shot peening ferritic heat resistant steel was investigated in components of varying geometries based on those found in conventional power station steam turbine blades. It was found that the shape of the component did not affect the efficacy of the shot peening process, which was found to be beneficial even under the high stress amplitude three point bend loads applied. Furthermore, by varying the shot peening process parameters and considering fatigue life it has been shown that the three surface effects of shot peening; roughening, strain hardening and the generation of a compressive residual stress field must be included in remnant life models as physically separate entities. The compressive residual stress field during plane bending low cycle fatigue has been experimentally determined using X-ray diffraction at varying life fractions and found to be retained in a direction parallel to that of loading and to only relax to 80% of its original magnitude in a direction orthogonal to loading. This result, which contributes to the retention of fatigue life improvement in low cycle fatigue conditions, has been discussed in light of the specific stress distribution applied to the components. The ultimate aim of the research is to apply these results in a life assessment methodology which can be used to justify a reduction in the length of scheduled plant overhauls. This will result in significant cost savings for the generating utility. KeywordsLow cycle fatigue, stress concentration, shot peening, residual stresses, ferritic heat resisting

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Section: Introductionmentioning

confidence: 99%

“…The presence of compressive residual stresses can increase both initiation and crack propagation lives as a result of a reduction in the effective applied tensile stress [13].…”

Section: Introductionmentioning

confidence: 99%

The effect of shot peening on notched low cycle fatigue

Soady

Mellor

Shackleton

et al. 2011

Materials Science and Engineering: A

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“…When 5053-H321 aluminium plates welded using double pass of FSW, using synchrotron radiation technique James etal. 7 was found that effect of fatiguebending loading, a significantly increase thepeak of tensile and compressiveresidual stress also translation of theresidual stress field to the tensile side. In spot welding, using neutron diffraction technique Suzuki et al 8 also found where a fatigue fracture occured, on the majority of residual stress near the center of weld.…”

Section: Introductionmentioning

confidence: 95%

“…Furthermore, microstructural evolution during annealing also associated with developmentultrafinegrained structure. 7 which is more dense, so it can increase the hardness value. 4 and the resistance to deformation.…”

Section: Tensile Propertiesmentioning

confidence: 99%

Residual Strain in Welded Joint of Pre-Strained Steel Plate

Henry

Triyono²,

Refai³

et al. 2014

Proceedings of the 2014 International Conference on Physics and Its Applications

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The measurement of internal residual strain on the elastic, yield and plastic pre-strained of SS400 during welding had been performed using neutron diffraction technique. SS400 steel has been welded using gas metal arc welding (GMAW) in pre-strained condition of 0%, 1%, 3%, and 5%. This paper will present strength of welded joint increases with increasing pre-strain, and also theinformation regarding the residual strain profiles along of steel plate welded, obtained by determining the strain-free lattice spacing.

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“…The presence of residual stresses in engineering components and structures significantly affect the fatigue behavior [2], strength [3], and dimensional stability [4]. Many studies have been conducted to investigate the effects of residual stress on the fatigue life of different materials [5][6][7]. The effects of residual stress and surface hardness on the fatigue life under different cutting conditions of 0.45%C steel were studied by Sasahara [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Fatigue Life of Ti-6Al-4V Treated by Vibratory Stress Relief

Zhang

Song³

2017

Metals

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Vibratory stress relief (VSR) is a highly efficient and low-energy consumption method to relieve and homogenize residual stresses in materials. Thus, the effect of VSR on the fatigue life should be determined. Standard fatigue specimens are fabricated to investigate the fatigue life of Ti-6Al-4V titanium alloy treated by VSR. The dynamic stresses generated under different VSR amplitudes are measured, and then the relationship between the dynamic stress and vibration amplitude is obtained. Different specimen groups are subjected to VSRs with different amplitudes and annealing treatment with typical process parameters. Residual stresses are measured to evaluate the stress relieving effects. Finally, the fatigue behavior under different states is determined by uniaxial tension-compression fatigue experiments. Results show that VSR and annealing treatment have negative effects on the fatigue life of Ti-6Al-4V. The fatigue life is decreased with the increase in VSR amplitude. When the VSR amplitude is less than 0.1 mm, the decrease in fatigue limit is less than 2%. Compared with specimens without VSR or annealing treatment, the fatigue limit of the specimens treated by VSR with 0.2 mm amplitude and annealing treatment decreases by 10.60% and 8.52%, respectively. Although the stress relieving effect is better, high amplitude VSR will lead to the decrease of Ti-6Al-4V fatigue life due to the defects generated during vibration. Low amplitude VSR can effectively relieve the stress with little decrease in fatigue life.

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Residual stresses and fatigue performance

Cited by 175 publications

References 10 publications

The effect of shot peening on notched low cycle fatigue

The effect of shot peening on notched low cycle fatigue

Residual Strain in Welded Joint of Pre-Strained Steel Plate

Experimental Investigation on the Fatigue Life of Ti-6Al-4V Treated by Vibratory Stress Relief

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