Effect of neutron-irradiation on the spinodal decomposition of Fe-32% Cr model alloy

A comparison has been performed between the extent of decomposition found in an Fe-32% Cr alloy that was both neutron-irradiated at 290 C and thermally aged for the equivalent time at the same temperature. In addition, these results are compared to data obtained from a series of specimens isothermally aged at 470 and 500 C. These atom probe results indicate that neutron irradiation has a significant effect on both the kinetics of decomposition and the morphology of the chromium-enriched α' phase. The results are consistent with the neutron irradiation significantly changing the location of the phase field in the phase diagram. (orig.)