Dependence of electrical resistivity of Fe-Al alloys on composition

Autor(en)

Adam Pazourek, Wolfgang Pfeiler, Vladimir Sima

Abstrakt

A series of binary Fe-Al alloys containing 20-40 at.% Al, having ordered D0(3) (Fe3Al) or B2 (FeAl) structure, was cast from pure elements. For a comparison, specimens were also prepared from corresponding complex Fe-Al alloys with additional alloying elements of C, Cr, Ti, Zr and B. All specimens were investigated in two states, as-prepared and heat treated (723 K/120h).

 

Electrical resistivity was measured at 291 K (RT) and 77 K (liquid N-2), respectively, by means of usual potentiometric method. Electrical resistivity data of these series of Fe-Al alloys with and without additional alloying elements are presented and discussed. Differences between resistivity of binary and complex alloys are mainly due to substitution of Fe by Cr in the D0(3) matrix. The addition of C in alloys with B2 structure lowers the resistivity of the matrix due to K-phase Fe3AlCx precipitation.

 

A strong correlation was observed between the temperature dependent part of electrical resistivity and long-range order in pure binary Fe Al alloys

Organisation(en)

Dynamik Kondensierter Systeme

Externe Organisation(en)

Technical University of Liberec, Charles University Prague

Journal

Intermetallics

Band

18

Seiten

1303-1305

Anzahl der Seiten

3

ISSN

0966-9795

DOI

https://doi.org/10.1016/j.intermet.2010.01.019

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/dependence-of-electrical-resistivity-of-feal-alloys-on-composition(1e61b0eb-bb46-4de3-9ceb-4f7fe46e7908).html