부산대학교 도서관

Al alloy matrix composite with TiNi shape memory fibers as reinforcement has been fabricated by hot pressing to enhance the mechanical properties. The smartness of the composite is given due to the shape memory effect of the TiNi fiber which generates compressive residual stress in the matrix material when heated after being prestrained. It showed that the yield stress at 90℃ was higher than that of the room temperature. Especially, the tensile Strength of this composite increases with increasing amount of prestrain, and it also depends on the volume fraction of fiber and heat treatment. Comparison between theoretical estimation and experimental data showed almost good correlation by introducing non-linear FEM analysis.