Influencing parameters on martensite transformation during low cycle fatigue for steel AISI 321

The influence of the low cycle fatigue parameters strain amplitude, cycle number, test temperature and frequency on the formation of martensite was investigated. Linear dependencies of the martensite content on plastic strain amplitude and the cycle number were found. The martensite content decrease...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2006-11, Vol.437 (1), p.109-113
Hauptverfasser:	Grosse, M., Kalkhof, D., Niffenegger, M., Keller, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Fatigue Low cycle fatigue Martensitic transformations Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Meta-stable austenitic steels Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Physics Strain induced martensitic transformation
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Zusammenfassung:	The influence of the low cycle fatigue parameters strain amplitude, cycle number, test temperature and frequency on the formation of martensite was investigated. Linear dependencies of the martensite content on plastic strain amplitude and the cycle number were found. The martensite content decreases exponentially with increasing temperature. No influence of LCF test frequency was found. The susceptibility for the martensitic transformation strongly depends on the thermo-mechanical pretreatment. No significant residual stresses were found after cyclic loading.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2006.04.077