Influence of Mechanical Loading, Temperature and Chemical Composition on the Deformation Induced Martensite Formation in Metastable Austenitic Steels

Frank Hahnenberger; Robert Skorupski; M. Smaga; Dietmar Eifler

doi:10.4028/www.scientific.net/MSF.738-739.217

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Influence of Mechanical Loading, Temperature and Chemical Composition on the Deformation Induced Martensite Formation in Metastable Austenitic Steels

Abstract:

The deformation induced α´-martensite formation in the metastable austenitic steels AISI 304, AISI 321 and AISI 348 was investigated in tensile and low cycle fatigue tests at ambient and low temperature. By means of stress strain and magnetic measurements, the mechanical behavior and phase transformation were characterized. The susceptibility of deformation induced α´-martensite formation depends on the chemical composition, the temperature and the degree of cumulated plastic strain. On the basis of comprehensive experimental data a mathematical model was developed to describe and predict the α´-martensite formation under cyclic loading in the temperature range -60 °C to 25 °C. The influence of test temperature and austenite stability of the model parameters was studied.

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Materials Science Forum (Volumes 738-739)

Pages:

217-221

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.738-739.217

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Online since:

January 2013

Authors:

Frank Hahnenberger, Robert Skorupski, M. Smaga, Dietmar Eifler

Keywords:

Austenite Stability, Cyclic Loading, Deformation Induced α´-Martensite, Low-Temperature, Modeling, Monotonic Loading

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