Assessment of low cycle fatigue improvement of machined AISI 316 stainless steel by brush hammering

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Show simple item record SIDHOM, N
ensam.hal.laboratories MAKHLOUF, K
ensam.hal.laboratories KHLIFI, A
ensam.hal.laboratories BRAHAM, Chedly
  86289 Procédés et Ingénierie en Mécanique et Matériaux [Paris] [PIMM] SIDHOM, H
ensam.hal.laboratories 2014-10-24T12:37:13Z 2015-01-25T01:00:27Z 2014-03-24 2014-10-08T16:23:26Z
dc.description.abstract The effects of wire brush hammering on low cycle fatigue behaviour of AISI 316 austenitic stainless steel has been investigated on turned samples through an experimental study combining strain controlled fatigue tests, scanning electron microscope examination and X-ray diffraction analysis. An increase in fatigue life by 266% was reported at an imposed strain amplitude of Δεt/2 = 0.2%. This improvement is limited to Δεt/2 ≤ 0.5%. It is found that wire brush hammering produces a surface texture that favours, under cyclic loading, nucleation of randomly dispersed short cracks of the order of 50 μm in length stabilized by a compressive residual stress field. In contrast, turned surface showed much longer unstable cracks of the order of 200 μm in length nucleated in the machining groves and propagated under the effect of a tensile residual stress field. It has also been established that wire brush hammering can be used as intermittent treatment to improve the residual fatigue life of components subjected to cyclic loading. The treatment is very efficient if it is performed at a fraction of service lifetime ni/Nr lower than 0.5. en
dc.language.iso en
dc.publisher Wiley
dc.rights Post-print
dc.subject fatigue crack en
dc.subject fatigue life en
dc.subject residual stress en
dc.subject stainless steel en
dc.subject wire brush hammering en
dc.title Assessment of low cycle fatigue improvement of machined AISI 316 stainless steel by brush hammering en
ensam.embargo.terms 3 Months
dc.identifier.doi 0.1111/ffe.12179
dc.typdoc Articles dans des revues avec comité de lecture
dc.localisation Centre de Paris
dc.subject.hal Sciences de l'ingénieur: Matériaux
dc.subject.hal Sciences de l'ingénieur: Mécanique
ensam.workflow.submissionConsumer newSubmission *
ensam.audience Internationale 1087-1100
ensam.journal Fatigue and Fracture of Engineering Materials and Structures
ensam.volume 37

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