Abstract:Molybdenum is one of the candidate metals for nuclear reactor structural [ ]materials because of its good creep properties and compatibility with alkali metals, but its application is limited by its room temperature brittleness. Rhenium is added to metallic molybdenum, which increases the recrystallization temperature of molybdenum and improves its room temperature processability. Among them, Mo-Re alloys with rhenium content of 41~47.5Wt.% and 10~15Wt.% have good room temperature strength and certain toughness and plasticity. Due to the scarcity of rhenium resources, it is of great significance to ensure material performance while reducing Re content for the development of molybdenum rhenium alloys. This article elaborates on the application and preparation status of molybdenum rhenium alloys in nuclear reactor structural materials, analyzes the performance advantages of high rhenium alloys and low rhenium alloys, and finally summarizes and looks forward to the existing problems of molybdenum rhenium alloys.

Abstract: