Calculation and measurement of the macroscopic temperature of mechanical alloying in a planetary mill with a ball load and quasi-cylindrical grinding body

The macroscopic temperature of mechanical alloying (MA) in a planetary mill with a ball load and quasi-cylindrical grinding body (QGB) is evaluated by the method of computer simulation and experimental measurements. It is determined that MA with a QGB is characterized a lower (by 140–280°C) macroscopic temperature and a decreased rate of heating compared with the traditional MA with a ball load. The dependences of the macroscopic temperature of MA on the treatment time, hardness of the treated material, speed of carrier rotation, and friction coefficient in the friction pairs grinding body-grinding body and grinding body-container wall were studied. It is found that MA with a QGB provides a significant increase in the treatment intensity owing to an increase in the speed of rotation of the carrier without excess overheating of the treated material.