Mechanical Properties of Ductile Fe sub 3 Al-Based Plates

The tensile, creep, and fatigue properties of ductile iron--aluminum (Fe sub 3 Al) plate in two thicknesses are investigated and, when possible, compared to sheet properties. In addition, the results of Charpy impact toughness tests are reported for one plate. The alloy investigated is designated FA-129, which is an ordered Fe sub 3 Al alloy with a composition tailored for high-temperature strength. The results show differences in tensile and creep properties for plate and sheet products. The results of high-cycle fatigue tests show that cyclic loading at stresses below the yield strength does not induce fatigue failure at temperatures of 25 and 454 deg C and that there is an effect of plate thickness at 600 deg C.