SPINODAL DECOMPOSITION TYPE MAGNET ALLOY

摘要

PURPOSE:To obtain a spinodal decomposition type magnet alloy of high performance not contg. an alloying element such as Co by adding a specified amount of Cr and V to Fe. CONSTITUTION:An Fe-Cr-V alloy consisting of 3-40% V, 5-45% Cr and the balance =40% Fe is refined in a high frequency furnace and cast into a slab. This slab is hot or cold worked to a prescribed shape and subjected to soln. heat treatment by heating at =1,000 deg.C for 1hr and water cooling. It is then aged in multiple steps under the conditions of 750 deg.C and 30min, 700 deg.C and 30min, 650 deg.C and 1hr, 600 deg.C and 2hr, and 550 deg.C and 3hr, and magnetization is carried out. Thus, a spinodal decomposition type magnet alloy of high performance can be manufactured at a low cost without using an expensive element such as Co.