Effects of alternating magnetic field aged on microstructure and mechanical properties of AA2219 aluminum alloy

No matter whether the sample was treated with the magnetic field or not, the micro hardness of samples increases with time first and then decreases. The hardness of the sample with the conventional aging reaches its peak at about 18 h, while that with the magnetic aging at about 8 h. The magnetic field promotes the diffusion and the aging process of the alloy.104