Tensile specimens of the pure metal were irradiated with fission neutrons at 320K, to displacement dose levels of 0.0075, 0.075 or 0.375dpa, or at 523K, to dose levels of 0.075 or 0.225dpa. Both unirradiated and irradiated specimens were tensile-tested at the irradiation temperature. The results were explained in terms of the role of interstitial clusters (produced directly in cascades) and their transport via 1-dimensional glide. It was suggested that the formation and interaction of so-called cleared channels might play a significant role in determining the deformation and fracture behavior.

Effects of Neutron Irradiation on Microstructure and Mechanical Properties of Pure Iron. B.N.Singh, A.Horsewell, P.Toft: Journal of Nuclear Materials, 1999, 271-272, 97-101