Cyclic Deformation Behavior of Austenitic Steels in the Temperature Range -60°C ≤T ≤550°C

M. Smaga; F. Hahnenberger; A. Sorich; Dietmar Eifler

doi:10.4028/www.scientific.net/KEM.465.439

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Cyclic Deformation Behavior of Austenitic Steels in the Temperature Range -60°C ≤T ≤550°C

Abstract:

In this investigation specimens of the austenitic steels AISI 304, AISI 321 and AISI 348 were investigated in fatigue tests in the temperature range -60°C ≤ T ≤ 550°C. A detailed microstructure-based characterization of the cyclic deformation behavior of austenitic steels was performed by means of stress-strain hysteresis, electrical resistance and magnetic measurements. Up to ambient temperature the occurring deformation induced martensite formation was measured in-situ with a ferritescope during cyclic loading. The temperature range for dynamic strain aging was reliably identified by means of a temperature increase fatigue test with one single specimen.

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Periodical:

Key Engineering Materials (Volume 465)

Pages:

439-442

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.465.439

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Online since:

January 2011

Authors:

M. Smaga, F. Hahnenberger, A. Sorich, Dietmar Eifler

Keywords:

Austenitic Steel, Dynamic Strain Aging (DSA), Elevated Temperature, Fatigue, Low-Temperature, Martensite

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