Effects of Thermal Aging on the Mechanical Properties of FeCrAl-ODS Alloy Claddings

The FeCrAl-ODS alloy claddings were manufactured and Vickers hardness, ring tensile tests transmission electron microscopy (TEM) observations of these performed to investigate the effects thermal aging at 450°C for 5,000 15,000 h. age-hardening all cladding was found. In addition, significant increase in strength accompanied by much larger loss ductility. It suggested that this behavior attributed (Ti, Al)-enriched phase (β′ phase) α′ precipitates (content Al is <7 mass%). comparison with alloys almost same chemical compositions, there both alloys. However, extrusion bar no-recrystallized structures keeping good different reduction ductility grain boundaries, dislocation densities specimen preparation direction.