Abstract
Abstract The effect of neutron irradiation at ~ 80° C on the alloy Fe3Al, in both the annealed and quenched states, has been investigated by measuring its electrical resistance, crystal lattice parameter and the intensity of superstructural lines. All the alloy characteristics studied have been found to change considerably. Neutron bombardment results in the destruction of a perfect long-range order (of the Fe3Al-DO3 type) in the previously annealed alloy and of a less perfect long-range order (of the Fe3Al-B2 type) in the previously quenched alloy. The post-irradiation anneal of specimens showed that the irradiated matter preserved “the memory” of its initial state which is partially regained as a result of slight heating. Possible mechanisms of radiation-disordering are discussed on the basis of the experimental data obtained.
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