Tensile and fracture toughness properties of the nanostructured oxide dispersion strengthened ferritic alloy 13Cr–1W–0.3Ti–0.3Y2O3

The realization of fusion power as an attractive energy source requires advanced structural materials that can cope with ultra-severe thermo-mechanical loads and high neutron fluxes experienced by fusion power plant components, such as the first wall, divertor and blanket structures. Towards this end, two variants of a 13Cr–1W–0.3Ti–0.3Y2O3 reduced activation ferritic (RAF-) ODS steel were produced by ball milling phase blended Fe–13Cr–1W, 0.3Y203 and 0.3Ti powders in both argon and hydrogen atmospheres. The milled powders were consolidated by hot isostatic pressing (HIP). The as-HIPed alloys were then hot rolled into 6 mm plates. Microstructural, tensile and fracture toughness characterization of the hot rolled alloys are summarized here and compared to results previously reported for the as-HIPed condition.