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Embrittlement of FE-CR-AL-ALLOYS

Published online by Cambridge University Press:  15 February 2011

J. H. Lange ,
M. Brede ,
B. Fischer ,
S. Spindler ,
H. Wagner ,
R. Wittmann ,
D. Gerthsen ,
A. Broska  and
J. Wolff
M. Brede
Affiliation:
Fraunhofer Institut für Angewandte Materialforschung IFAM, Bremen, Germany
D. Gerthsen
Affiliation:
Laboratorium für Elektronenmikroskopie LEM derUniversität Karlsruhe, Germany
J. Wolff
Affiliation:
Institut für Materialphysik derUniversität Göttingen, Germany
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Abstract

The mechanical behavior of Fe-Cr-Al-alloys was investigated at different temperatures and after several heat-treatments in order to determine critical conditions for the ductility of the material. It was found that a significant embrittlement takes place during deformation at higher temperatures around 400 °C as well as after heat-treatments at temperatures above 1000 °C in combination with very high or very low cooling rates. Possible reasons for this behavior are discussed with respect to the results of transmission electron microscopy (TEM), Auger spectroscopy (AES), positron annihilation spectroscopy (PAS) and measurements of the electrical resistivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 539: Symposium M – Fracture & Ductile vs. Brittle Behavior - Theory, Modelling… , 1998 , 41
Copyright
Copyright © Materials Research Society 1999

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References

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