PT Journal
AU Vodickova, V
   Pazourkova Prokopcakova, P
   Svec, M
   Hanus, P
   Moravec, J
   Camek, L
TI The Influence of Cr Addition and Heat Treatment on Dilatometric Characteristics of Cast Fe-Al-Si Intermetallic Alloys
SO Manufacturing Technology Journal
PY 2022
BP 95
EP 101
VL 22
IS 1
DI 10.21062/mft.2022.014
DE Fe3Al-type iron aluminides; silicon and chromium addition; thermal expansion coefficient; heat-treatment
AB The cast Fe-Al-Si type intermetallic alloys (with or without chromium content) were investigated with the aim to obtain the values of thermal expansion coefficient and describe the dilatometric behavior of alloys. The effect of chromium addition, as well as the influence of heat treatment on the structure and dilatometric characteristics (thermal expansion coefficient, CTE), were described. It has been shown that the presence of chromium does not significantly influence the values of thermal expansion coefficient of as-cast alloys so that chromium addition can be substituted by higher silicon content. The annealing used for phase stabilization slightly decreases the CTE values for chromium doped alloys, nevertheless only in the higher temperature range. In comparison, CTE values of the alloy without chromium are slightly increased by the annealing used in the whole temperature interval. But, the differences are not significant from the point of view of technical practice.
ER