Magnetostrictive material and preparation method thereof

摘要

The present invention relates to a Fe—Ga—Al-based magnetostrictive thin-sheet material and a process for preparation thereof. The raw materials used for production of the thin-sheet material is composed of the components according to the general Formula, Fe100-x-y-zGaxAlyMz, wherein x=10-30, y=1-10, and z=0.1-5, and M is any one, or more elements selected from V, Cr, Zr, Sb, Sn, Ti, SiC.

主权项

1. A method of preparing a magnetostrictive sheet material, said method consisting of:
(1) proportioning raw materials of the magnetostrictive sheet material according to ratios of the components which conform to the following general Formula: Fe100-x-y-zGaxAlyMz, and additionally adding 1 at. % to 5 at. % Ga as LOI, wherein M is at least one of V, Cr, Zr, Sb, and Sn, x is no less than 15 and no greater than 25, y is no less than 1 and no greater than 1.5, and z is no less than 1 and no greater than 3; (2) smelting the raw materials obtained in step (1) in a protective atmosphere and casting the raw materials to form an alloy ingot; (3) forging the alloy ingot at a temperature no less than 850° C. and no greater than 1100° C. with a forging deformation no less than 10% and no greater than 90%; (4) hot rolling the alloy ingot at a temperature no less than 900° C. and no greater than 1100° C., with a hot rolling deformation no less than 50% and no greater than 90%; (5) cold rolling the alloy ingot at room temperature over 10 to 30 passes with a cold rolling deformation no less than 60% and no greater than 90%; and (6) preserving the alloy ingot at a temperature no less than 1000° C. and no greater than 1300° C. for 1 to 24 hours, and then cooling the alloy ingot to room temperature.