MECHANICAL-PROPERTIES OF ODS FE-BASED ALL OYS PRODUCED BY MECHANICAL ALLOYING AND HOT CONSOLIDATION

This paper based on practical applications illustrates some possibilit ies of the mechanical alloying process in improving mechanical propert ies of Fe-based alloys, namely ferritic steels and FeAl intermetallics . This improvement is mainly due to a nanometer size oxide dispersion (ODS alloys - Oxide Dispersion Strengthening) which is impossible to o btain by conventional metallurgy. In our study, the oxide dispersion w as introduced either as ceramic powders or by in situ oxidation. The O DS alloys prepared in this way exhibit good mechanical strength and du ctility in a wide temperature range (up to 800 degrees C). Their prope rties are compared to some currently used industrial materials.