The void swelling behavior of two molybdenum-base alloys, Mo -.5Ti and TZM, has been studied over a range of irradiation temperatures from 750 to 1450°C. Irradiation damage of up to 60 displacements per atom was produced with 3.1 MeV V ions. Standard transmission electron microscopy techniques were employed to analyze the irradiation induced microstructure. The predominance of data is from irradiations carried out between 850 and 1100°C. In this temperature range, swelling in TZM is approximately linearly dependent on dose, but independent of irradiation temperature. In contrast, Mo-.5Ti shows a distinct temperature dependence of swelling and swelling values higher than those for TZM. The influence of alloying additions, dislocation loop microstructure and grain size on swelling behavior is discussed.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering