On the low-cycle fatigue response of pre-strained austenitic Fe 61Mn 24Ni 6.5Cr 8.5 alloy showing TWIP effect

Research output: Contribution to journalArticleResearchpeer review

Authors

  • H. G. Lambers
  • C. J. Rüsing
  • T. Niendorf
  • D. Geissler
  • J. Freudenberger
  • H. J. Maier

External Research Organisations

  • Leibniz Institute for Solid State and Materials Research Dresden (IFW)
  • Technische Universität Dresden
  • TU Bergakademie Freiberg - University of Resources
  • Paderborn University
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Details

Original languageEnglish
Pages (from-to)51-60
Number of pages10
JournalInternational journal of fatigue
Volume40
Publication statusPublished - 12 Jan 2012
Externally publishedYes

Abstract

The low-cycle fatigue behavior of a high manganese austenitic alloy showing TWIP (Twinning-Induced Plasticity) in its homogenized as-received (AsRec) and in pre-strained conditions was determined. Pre-strains were applied both in tension and compression. The fatigue experiments, conducted in total strain control under fully reversed push-pull loading, were accompanied by thorough microstructural investigations utilizing electron backscatter diffraction and transmission electron microscopy. The results clearly lay out the different microstructural evolutions during cyclic loading of the AsRec and the pre-deformed conditions. Cyclic hardening prevails for the AsRec condition due to the increase in dislocation density and the subsequent rearrangement of dislocations into labyrinth and cell structures upon further cycling, whereas pronounced softening accompanied by a decrease in absolute value of mean stress dominated the cyclic deformation response of the pre-deformed conditions.

Keywords

    Dislocation cells, LCF, Microstructure, Pre-deformation, Twinning

ASJC Scopus subject areas

Cite this

On the low-cycle fatigue response of pre-strained austenitic Fe 61Mn 24Ni 6.5Cr 8.5 alloy showing TWIP effect. / Lambers, H. G.; Rüsing, C. J.; Niendorf, T. et al.
In: International journal of fatigue, Vol. 40, 12.01.2012, p. 51-60.

Research output: Contribution to journalArticleResearchpeer review

Lambers HG, Rüsing CJ, Niendorf T, Geissler D, Freudenberger J, Maier HJ. On the low-cycle fatigue response of pre-strained austenitic Fe 61Mn 24Ni 6.5Cr 8.5 alloy showing TWIP effect. International journal of fatigue. 2012 Jan 12;40:51-60. doi: 10.1016/j.ijfatigue.2012.01.002
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title = "On the low-cycle fatigue response of pre-strained austenitic Fe 61Mn 24Ni 6.5Cr 8.5 alloy showing TWIP effect",
abstract = "The low-cycle fatigue behavior of a high manganese austenitic alloy showing TWIP (Twinning-Induced Plasticity) in its homogenized as-received (AsRec) and in pre-strained conditions was determined. Pre-strains were applied both in tension and compression. The fatigue experiments, conducted in total strain control under fully reversed push-pull loading, were accompanied by thorough microstructural investigations utilizing electron backscatter diffraction and transmission electron microscopy. The results clearly lay out the different microstructural evolutions during cyclic loading of the AsRec and the pre-deformed conditions. Cyclic hardening prevails for the AsRec condition due to the increase in dislocation density and the subsequent rearrangement of dislocations into labyrinth and cell structures upon further cycling, whereas pronounced softening accompanied by a decrease in absolute value of mean stress dominated the cyclic deformation response of the pre-deformed conditions.",
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note = "Funding information: The authors would like to thank M. Frey for the melt processing, D. Seifert for forging and drawing operations as well as A. Vo{\ss} and A. Voidel for the chemical analysis, Mr. A. Kurtovic, Mr. M. Droste as well as Mr. J.T. Harting for performing the fatigue experiments. Mr. E. Djakow is thanked for doing the compressive deformation of the alloy, Mr. A. Gr{\"u}ning from the University of Kassel is acknowledged for carrying out the residual stress measurements. Financial support by Deutsche Forschungsgemeinschaft within the project “Optimierung des Erm{\"u}dungsverhaltens von TWIP-St{\"a}hlen durch gezielte Vorverformung”, Contract No. NI 1327/1-1, is gratefully acknowledged.",
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AU - Rüsing, C. J.

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AU - Geissler, D.

AU - Freudenberger, J.

AU - Maier, H. J.

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