Preparation of Fe₂Tb_xDy_1-x particles dispersed Al matrix composite

Abstract

Metal Matrix Composite containing Fe₂Tb_0.3Dy_0.7 particles in Al matrix is strengthened by the effect of magnetostriction. The composite is fabricated by powder metallurgy, and the average diameter and the volume fraction of the particle are 2μm and 5%, respectively. The magnetostriction induced by the magnetic field is relaxed at high temperature. Turning off the magnetic field at room temperature produces the residual stress. It is found that the compressive stress induced in the matrix develops the large tensile strength.