Details
Original language | English |
---|---|
Pages (from-to) | 51-60 |
Number of pages | 10 |
Journal | International journal of fatigue |
Volume | 40 |
Publication status | Published - 12 Jan 2012 |
Externally published | Yes |
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
- Mathematics(all)
- Modelling and Simulation
- Materials Science(all)
- General Materials Science
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: International journal of fatigue, Vol. 40, 12.01.2012, p. 51-60.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - On the low-cycle fatigue response of pre-strained austenitic Fe 61Mn 24Ni 6.5Cr 8.5 alloy showing TWIP effect
AU - Lambers, H. G.
AU - Rüsing, C. J.
AU - Niendorf, T.
AU - Geissler, D.
AU - Freudenberger, J.
AU - Maier, H. J.
N1 - 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. Voß 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. Grüning from the University of Kassel is acknowledged for carrying out the residual stress measurements. Financial support by Deutsche Forschungsgemeinschaft within the project “Optimierung des Ermüdungsverhaltens von TWIP-Stählen durch gezielte Vorverformung”, Contract No. NI 1327/1-1, is gratefully acknowledged.
PY - 2012/1/12
Y1 - 2012/1/12
N2 - 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.
AB - 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.
KW - Dislocation cells
KW - LCF
KW - Microstructure
KW - Pre-deformation
KW - Twinning
UR - http://www.scopus.com/inward/record.url?scp=84858078410&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2012.01.002
DO - 10.1016/j.ijfatigue.2012.01.002
M3 - Article
AN - SCOPUS:84858078410
VL - 40
SP - 51
EP - 60
JO - International journal of fatigue
JF - International journal of fatigue
SN - 0142-1123
ER -