Cyclic Deformation and Fatigue Behaviors of Stainless Steel 304L Including Mean Stress and Pre-Straining Effects

Roux, Jean‐Christophe Le; Taheri, Saïd; Sermage, Jean-Philippe; Colin, Julie; Fatemi, Ali

doi:10.1115/pvp2008-61789

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…The benefits of residual compressive stresses to enhance the fatigue resistance of traditional metallic components have long been recognized (Ref [27][28][29]. For example, many engineering components have been shot-peened or cold-worked with fatigue strength enhancement as the primary objective.…”

Section: Discussionmentioning

confidence: 99%

Effect of Prestrain on the Fatigue Life of Superelastic Nitinol

Senthilnathan

Shamimi

Bonsignore

et al. 2019

J. of Materi Eng and Perform

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Three types of fatigue testing are performed to elucidate the effects of prestraining superelastic Nitinol on its subsequent fatigue lifetime: rotary bending and tension-tension testing of wire, and beam bending using diamond-shaped specimens fabricated from tubing. Results show that local plastic deformation during prestraining induces residual stresses that have a pronounced effect on fatigue performance, enhancing performance when the fatigue duty cycle is of the same sense as the prestraining (tensile prestraining followed by a tensile duty cycle, for example), and decreasing fatigue lifetime when the sense of the duty cycle is opposite to that of prestraining. This provides an avenue to increasing fatigue lifetime, but more importantly it highlights the need to fully understand the nature of the duty cycle: for example, prestraining a stent by crimping it into a delivery catheter induces favorable residual stresses with respect to subsequent pulsatile fatigue, but might accelerate fracture in other modes, such as axial or crush fatigue. Caution is also advised when trying to apply data from ''constant life diagrams'' derived from the literature (Ref 1, 2 for example) that may not properly reflect the strain history of the device being analyzed.

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Section: Discussionmentioning

confidence: 99%

Effect of Prestrain on the Fatigue Life of Superelastic Nitinol

Senthilnathan

Shamimi

Bonsignore

et al. 2019

J. of Materi Eng and Perform

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“…Following earlier work [18], SCH is also observed in copper and is considered as a general phenomenon which occurs in f.c.c materials at high-cycle fatigue behavior. A previous study [19] on two grades (THYSSEN and CLI) of 304L stainless steel has shown that fatigue life is much longer when SCH occurs but no correlation is found between the emergence of this phenomenon and the fatigue life.…”

Section: Analyses and Discussionmentioning

confidence: 87%

Effect of Pre-Deformation on the Cyclic Behavior and Fatigue of 304L SS

Taleb

Kpodekon

2016

KEM

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This study deals with the effect of the loading history on the cyclic behavior and the fatigue life of a 304L stainless steel at room temperature. The experiments have been performed using two specimens’ categories. The first one (virgin) has been submitted to only classical fatigue tests while in the second category, prior to the fatigue test; the specimen was subjected to a pre-hardening process under either monotonic or cyclic strain control. Cyclic softening followed by cyclic hardening are observed for the virgin specimens while only cyclic softening is exhibited by the pre-hardened specimens. The obtained results show that fatigue life is strongly influenced by the pre-hardening: the latter seems beneficial under stress control but detrimental under strain control, even in the presence of a compressive mean stress. The results are discussed regarding the cyclic evolution of the elastic modulus as well as the isotropic and kinematic parts of the strain hardening in different configurations: with or without pre-hardening, stress or strain control.

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“…To take into account the LWR environment effect, we consider the approach based on the environmental factor F en that we apply on the SWT-life curve. Since F en is defined as F en = N f,air N f,water (8) and since it is a constant for a given testing condition (T, .…”

Section: Discussionmentioning

confidence: 99%

“…The tested material was a laminated plate made of AISI 304L stainless steel manufactured by Creusot-Loire Industrie (sheet XY182), annealed at 1100 • C and quenched with water. This material has been used in various previous studies [7,8,10,21]. The mechanical properties and chemical composition are presented in Tables 1 and 2.…”

Section: Methodsmentioning

confidence: 99%

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Mean Stress Effect on the Fatigue Life of 304L Austenitic Steel in Air and PWR Environments Determined with Strain- and Load-Controlled Experiments

Spätig

Roux

Bruchhausen

et al. 2021

Metals

Self Cite

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The mean stress effect on the fatigue life of 304L austenitic steel was evaluated at 300 °C in air and pressurized water reactor (PWR) environments. Uniaxial tests were performed in strain-control and load-control modes, with zero mean stress and a positive mean stress of 50 MPa. A specific procedure was used for the strain-controlled experiments to maintain the strain amplitude and mean stress constant. The strain-controlled data indicate that the application of positive mean stress decreases the fatigue life for a given strain amplitude in air and PWR environments. The data also show that the life reduction is independent of the environments, suggesting that no synergistic effects between the mean stress and the LWR environment occur. The load-controlled experiments confirm that the application of positive mean stress increases fatigue due to cyclic hardening processes. This observation is much less pronounced in the PWR environment. All data were analyzed using the Smith–Watson–Topper (SWT) stress–strain function, which was shown to correlate well with all strain- and load-controlled data with and without mean stress in each environment. In the SWT–life curve representation, the life reduction in the PWR environment was found fully consistent with the NUREG-CR6909 predictions.

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Cyclic Deformation and Fatigue Behaviors of Stainless Steel 304L Including Mean Stress and Pre-Straining Effects

Cited by 10 publications

References 17 publications

Effect of Prestrain on the Fatigue Life of Superelastic Nitinol

Effect of Prestrain on the Fatigue Life of Superelastic Nitinol

Effect of Pre-Deformation on the Cyclic Behavior and Fatigue of 304L SS

Mean Stress Effect on the Fatigue Life of 304L Austenitic Steel in Air and PWR Environments Determined with Strain- and Load-Controlled Experiments

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