Age-hardening Behavior of MgB2 Particle Dispersed Al Alloy Composite Materials

In this work, aging behavior of MgB2 particle dispersed Al-1 mass%Mg2Si alloy composite material which including 4, 8 and 50 vol. % MgB2, was investigated by hardness test and TEM observation to know their age-hardenability. The age-hardenability was observed for the composite materials with 4 and 8 vol. % MgB2 but not for that with 50 vol. % MgB2. The precipitates in these composite materials were also investigated using TEM.