PT Journal
AU Vodickova, V
   Hanus, P
TI The Effect of Zirconium and Carbon Addition on Thermal Expansion of Fe3Al-Based Iron Aluminides
SO Manufacturing Technology Journal
PY 2015
BP 739
EP 743
VL 15
IS 4
DI 10.21062/ujep/x.2015/a/1213-2489/MT/15/4/739
DE Fe3Al - type iron aluminides; zirconium and carbon addition; phase structure; coefficient of thermal expansion
AB Fe3Al iron aluminides with Zr addition appear like promising materials for high-temperature applications. Carbon is often present in alloyed iron aluminides because of its occurrence in raw iron. Therefore Zr addition can lead to the formation of zirconium carbides in the structure of the alloys. Also other carbides can form depending on carbon amount. The size and distribution of carbide particles can affect high-temperature behavior of aluminides. Thermal expansion of alloys with 0.25, 0.5 and 1 at.% Zr was studied by means of coefficient thermal expansion (CTE) measurement. The structure of alloys was obtained by scanning electron microscopy. Energy dispersive analysis and X-ray diffraction were used for phase identification.
ER