Texture Evolution and Magnetostriction of Rolled (Co 70 Fe 30 ) 99.8 (NbC) 0.2 Sheets

Magnetostrictive (Co ₇₀ Fe ₃₀ ) _99.8 (NbC) _0.2 sheets in 0.3 mm thickness were prepared successfully by forging, hot rolling, and cold rolling. In this paper, the effect of heat treatment on texture evolution and magnetostriction of the (Co ₇₀ Fe ₃₀ ) _99.8 (NbC) _0.2 sheets was investigated. The strong <110> fiber texture along the rolling direction, which originated from the cold-rolling process was retained in the annealed (Co ₇₀ Fe ₃₀ ) _99.8 (NbC) _0.2 sheets with the annealing temperature ranging from 500 °C to 700 °C. When the annealing temperature increased to 800 °C, the proportion of <100>fiber texture markedly increased, and the magnetostriction increased from 93 to 135 ppm. As the annealing temperature reached higher than 900 °C, a proportion of <100> fiber texture gradually reduced due to the secondary recrystallization. As a result, the magnetostriction of (Co ₇₀ Fe ₃₀ ) _99.8 (NbC) _0.2 sheets decreased.