[en] The report describes the experimental investigation of void swelling in solution-treated 316 stainless steels in the HVEM as a function of both temperature and boron contents. The specimens used in this study were 2ppm and 49ppm of boron content 316 steels. The specimens were irradiated at temperatures of 723, 773 and 823K to doses up to about 30dpa with 1 MeV electron in a JEM-1000D High Voltage Electron Microscope. The damage rate was about 2x10^-3 dpa/sec. The reflection vector use was (200). Defect clusters were formed at an early stage of the irradiation and continue to grow. Dislocation loops formed at the early stages of the irradiation were interstitial type and some voids were formed at higher irradiation doses. With the addition of a small amount of boron, the void swelling was prominently suppressed at the temperatures of 723, 773 and 823K with the highest swelling at 773K. There was also development of precipitates distributed in the matrix of both B-modified steels during the electron irradiation. (author)