The purpose of this project is to evaluate the elevated temperature tensile properties of Alloy EP-823, a leading target material for accelerator-driven waste transmutation applications. This alloy has been proven to be an excellent structural material to contain the lead-bismuth-eutectic (LBE) nuclear coolant needed for fast spectrum operations. However, very little data exist in the open literature on the tensile properties of this alloy. The selection of Alloy EP-823 as the test material in the proposed task is based on the recommendation of our collaborator at the Los Alamos National Laboratory (LANL). The test material will be thermally treated prior to the evaluation of its tensile properties at temperatures relevant to the transmutation applications. The deformation characteristics of tensile specimens, upon completion of testing, will be evaluated by surface analytical techniques using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The overall results will lead to the development of a mechanistic understanding of the elevated-temperature deformation processes in this alloy as a function of thermal treatment. Understanding deformation mechanisms of Alloy EP-823 may also help the development of suitable target materials possessing enhanced LBE corrosion resistance and acceptable radiation damage in the United States.
Accelerator-driven systems; Alloy EP-823; Deformations (Mechanics); Metals — Effect of high temperatures on; Nuclear reactors — Materials — Testing; Martensitic stainless steel — Ductility; Strength of materials
Materials Science and Engineering | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy
Roy, A. K.,
Development of a Mechanistic Understanding of High-Temperature Deformation of Alloy EP-823 for Transmutation Applications.
Available at: https://digitalscholarship.unlv.edu/hrc_trp_sciences_materials/77