Microstructure Evolution and Phase Transformation in a Novel High-Alloyed TRIP Steel Observed during in-Situ Tensile and Cyclic Deformation

Anja Weidner; Horst Biermann

doi:10.4028/www.scientific.net/KEM.465.350

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 465Microstructure Evolution and Phase Transformation...

Microstructure Evolution and Phase Transformation in a Novel High-Alloyed TRIP Steel Observed during in-Situ Tensile and Cyclic Deformation

Abstract:

The tensile and cyclic deformation behaviour of a new metastable austenitic stainless cast steel were studied in-situ in a scanning electron microscope (SEM). The metastable steel was investigated in cast condition. The in-situ tests in the SEM show the evolution of the microstructure in dependence on the deformation degree for uniaxial deformation and the number of cycles during fatigue, respectively. The development of the microstructure (i.e. deformation bands) are correlated with the places, where the phase transformation of the metastable austenite into the hcp structure or the bcc ’- martensite (TRIP – effect; TRansformation Induced Plasticity) takes place by applying different SEM-techniques as electron backscatter diffraction (EBSD). In addition, calculations of local deformation fields developing during tensile and cyclic deformation using digital image correlation (DIC) are presented.

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Periodical:

Key Engineering Materials (Volume 465)

Pages:

350-353

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.465.350

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Online since:

January 2011

Authors:

Anja Weidner, Horst Biermann

Keywords:

In Situ Deformation, Martensitic Transformation Digital Image Correlation, TRIP Steel

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