Tensile Properties of 15wt. %TiB<sub>2</sub>/7055 Composite Fabricated by <i>In Situ</i> Method

Abstract

7055 aluminum alloy reinforced with 15wt. % TiB2 particulates was synthesized by in situ method, the microstructure and tensile properties were investigated. There are a few particulate clusters in the matrix. The elastic modulus and hardness of the composite are higher than that of the matrix alloy, but the yield strength and ultimate tensile strength decrease. The decrease of strength is attributed to the presence of TiB 2 particulate cluster and residual reaction slag.