| Abstract Scope |
The phenomenon of stress aging can be regarded as a form of non-static precipitation. Extensive research and applications have already been established for aluminum alloys and high-temperature nickel-based alloys. However, in the field of magnesium alloys, efforts are still in the preliminary stages, necessitating comprehensive and systematic fundamental research. We reveal that, in Mg-Zn and Mg-Y alloys, uniaxial stress can significantly alter the precipitation process and the strengthening effect. The number density, morphology, and aspect ratio of precipitate particles under different aging conditions (stress-free, tensile-stress, and compressive-stress) are systematically compared. The underlying thermodynamics and kinetics underlying stress-aging in magnesium are discussed. |