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On the high cycle fatigue resistance of austenitic stainless steels with surface gradient microstructures: Effect of load ratio and associated residual stress modification

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  • معلومة اضافية
    • Contributors:
      Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3); Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies; Labex DAMAS; Université de Lorraine (UL); Endommagement et durabilité Institut Pprime (ENDO); Département Physique et Mécanique des Matériaux Institut Pprime (Département PMM); Institut Pprime UPR 3346 (PPrime Poitiers ); Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Institut Pprime UPR 3346 (PPrime Poitiers ); Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers = University of Poitiers (UP)-École Nationale Supérieure de Mécanique et d’Aérotechnique Poitiers (ISAE-ENSMA)-Centre National de la Recherche Scientifique (CNRS); The authors are highly grateful to the Ministry of Steel, Government of India, for the financial support provided under the project No. R&D/Min/Steel/LT/Met/16-17/05 and M/S Jindal Stainless Limited-Hissar, for supplying the test material for the present investigation. The authors are thankful to Prof. Indradev Samajdar, IIT Bombay, to permit stress measurement in his laboratory. The authors are also thankful to all the co-investigators of this project.; ANR-11-LABX-0008,DAMAS,Design des Alliages Métalliques pour Allègement des Structures(2011)
    • بيانات النشر:
      CCSD
      Elsevier
    • الموضوع:
      2022
    • Collection:
      Université de Poitiers: Publications de nos chercheurs.ses (HAL)
    • نبذة مختصرة :
      International audience ; The effect of gradient microstructure generated by ultrasonic surface mechanical attrition treatment (SMAT) on the fatigue performance of an austenitic stainless steel has been evaluated in the context of localized and general plasticity by comparing two load ratios: fully reversed tension-compression (TC) RTC = -1 and tension-tension (TT) RTT = +0.1, respectively.After identical SMAT processing conditions, the fatigue limit was enhanced by +17% for RTC while it was reduced by -7% for RTT. Under RTC cyclic loading, self-heating of the specimens and sub-surface martensitic transformation occurred but not for RTT. The residual stress measurements have also revealed that while the stress gradient was smoothed after the RTC fatigue loading, it was completely reverted for the RTT one. In turns, the fatigue crack initiation sites and propagation were modified between the RTC and RTT loading conditions.Considering the stabilized surface residual stress after fatigue loading, the use of a Crossland criterion allowed to explain both the effects of load ratio and SMAT on the high cycle fatigue behavior of the stainless steel. It turns out that under the studied loading conditions the modifications of residual stress state can be considered as the primary factor governing the varying fatigue performances and the observed triggering at different initiation sites.
    • الرقم المعرف:
      10.1016/j.msea.2022.142916
    • الدخول الالكتروني :
      https://hal.univ-lorraine.fr/hal-03601305
      https://hal.univ-lorraine.fr/hal-03601305v1/document
      https://hal.univ-lorraine.fr/hal-03601305v1/file/MSE%20A%20Clement%20DUREAU.pdf
      https://doi.org/10.1016/j.msea.2022.142916
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.3AF8DC70