Preparation of Fe2TbxDy1-x particles dispersed Al matrix composite.

Abstract

Metal Matrix Composite containing Fe2Tb0 .3Dy0.7 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 2um 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.