text: Radiation embrittlement, also known as neutron embrittlement, is a phenomenon more commonly observed in reactors and nuclear plants as these materials are constantly exposed to a steady amount of radiation. When a neutron irradiates the metal, voids are created in the material, which is known as void swelling. If the material is under creep (under low strain rate and high temperature condition), the voids will coalesce into vacancies which compromises the mechanical strength of the workpiece.