Alnico磁石合金の圧延および再結晶による集合組織について

抄録

An Alnico-8 magnet alloy was prepared by melting in vacuum. The ingots were reduced to 60∼70% in thickness by rolling at temperature between 1200° and 1000°C. The final thickness was approximately 10 mm. The rolling texture was found to contain three components; (100)[011], (112)[1\bar10] and (111)[11\bar2] orientations. This texture is almost the same as that in the cold low carbon steel. This suggests that the slip direction of the Alnico alloy is ⟨111⟩ axis. On heating above 1225°C, recrystallization took place in the rolled Alnico alloy. The recrystallization texture consists of three components; the (100)[011] and (112)[1\bar10] components scattered by rotation around the normal to the rolling plane and the (111)[11\bar2] component. A remarkable grain growth was observed on heating at 1300°C.