Materials Investigations for the Target of the German Spallation Neutron Source and Their Relations to Fusion Reactor Materials Research

Materials problems of heavily loaded components of the German spallation neutron source are similar to those of a fusion reactor in terms of helium and hydrogen embrittlement, high-cycle thermal fatigue under irradiation, swelling and irradiation creep. This is illustrated by two examples from current and planned investigations for the target element cladding (Al--Mg and Al--Mg--Si alloys) and a stationary proton beam window (SAB-930--an Al matrix 7% Al sub 2 O sub 3 alloy and Nb sub 40 Ni sub 60 ).--AA