Magnetic Properties of Beryllium Bronze BrB-2 Aged in a Constant Magnetic Field

For the first time, the influence of the aging temperature and the applied constant magnetic field on the aging of beryllium bronze BrB-2 has been studied by methods of microhardness, transmission electron microscopy and measurements of magnetic properties. Samples of beryllium bronze BrB-2 were kept for 0.33 h at a temperature of 800°С, then quenched by rapid immersion in water (20°С) and subjected to artificial aging at temperatures of 250–500°С for 1 h in a PMF with a strength of 557.2 kA/m and without him. A negative magnetoplastic effect was found, leading to an increase in microhardness up to ~30%. The presence of the strengthening phase α-CuBe, which plays a large role in the formation of the strength properties of the alloy, is established, and the imposition of the constant magnetic field leads to the activation of the aging process. When the constant magnetic field is applied, a tendency is observed for the transition of the alloy from the diamagnetic state to the superparamagnetic state.