Fatigue life enhancement of TIG-welded 304L stainless steels by shot peening

Benchouia, S.; Merakeb, N.; Adjel, S.; Ehlers, Sören; Baccouche, M.; Kaddour, A.S.

doi:10.1007/s00170-018-2898-5

Cited by 16 publications

(2 citation statements)

References 22 publications

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“…The 304 austenitic stainless steel (SS304) is one of the most widely used metallic materials and is processed into a variety of engineering structural components. Combined with shot peening treatments, its mechanical properties are further developed and play a more potential and valuable role in the practical service of engineering structures [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Investigations on the changed intensity shot peening specimens machined from SS304: process characterization, fatigue modeling, and failure analyses

Yang

2022

Int J Adv Manuf Technol

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Characterization on the surface morphology, residual stress relaxation and fatigue life prediction of the changed intensity shot peening specimens machined from SS304 were carried out. The present work aims, first and foremost, to model the fatigue performance of shot peening specimens machined from SS304 in extra-low-, low-and high-cycle regime by clarifying the relaxation life component and fatigue life component with the total failure life, thereby successfully evaluating the fatigue performance of un-/0.1 mmA-/0.25 mmA-/0.4 mmA-peened components with satisfactory results in the whole cycle regime. It is, therefore, essential to provide a precise definition of the master life diagram on the purpose of evaluating the fatigue performance of shot peening components in service by linear interpolation of shot peening intensities considering the engineering applicability. Additionally, the characterization of multiple-fatigue crack initiation to failure was also identified by fractography analysis, which reasonably illustrated the non-conservative life prediction in the high-cycle regime.

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Section: Introductionmentioning

confidence: 99%

Investigations on the changed intensity shot peening specimens machined from SS304: process characterization, fatigue modeling, and failure analyses

Yang

2022

Int J Adv Manuf Technol

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“…One further method, where these two approaches possibly are combined, is shot-peening. The impact of the shots decreases the tensile residual stresses and can even create compressive residual stresses in the treated surface [17,18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of effect of shot-peening with HFMI treatment or use of LTT consumables on fatigue strength of 1300 MPa yield strength steel weldments

2020

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In this paper, T-joint samples in a 1300 MPa yield strength steel were produced using conventional or low transformation temperature (LTT) type consumables. The welded samples were either subjected to high-frequency mechanical impact (HFMI) treatment or to shot-peening. Fatigue testing was performed under fully reversed, constant amplitude bending load. Shot-peening gave a significant increase in fatigue strength for more than around 50,000 cycles. Shot-peened LTT welds had the highest fatigue strength, with conventional welds being shot-peened having slightly lower fatigue strength. HFMI treatment of conventional and LTT welds improved the fatigue strength also, but to a lesser extent, keeping the slope in the SN diagram close to three, while shot-peened samples had a slope of 5–7. Significant differences in compressive residual stress were seen between the different welds, with the most compressive stress found in the shot-peened samples. This was probably one of the main reasons for the improved fatigue life of shot-peened samples.

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Effect of severe shot peening on the fatigue life of the laser-cladded Inconel 718 specimens

Ghorashi

Farrahi

Movahhedy

2019

Int J Adv Manuf Technol

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Fatigue life enhancement of TIG-welded 304L stainless steels by shot peening

Cited by 16 publications

References 22 publications

Investigations on the changed intensity shot peening specimens machined from SS304: process characterization, fatigue modeling, and failure analyses

Investigations on the changed intensity shot peening specimens machined from SS304: process characterization, fatigue modeling, and failure analyses

Comparison of effect of shot-peening with HFMI treatment or use of LTT consumables on fatigue strength of 1300 MPa yield strength steel weldments

Effect of severe shot peening on the fatigue life of the laser-cladded Inconel 718 specimens

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