Effect of Boron Addition on the Precipitation Behavior of S31254

Effect of Boron Addition on the Precipitation Behavior of S31254

Blog Article

To reduce the precipitation of σ phases and to improve the hot workability of S31254 steels, boron has been added into the composition of S31254 to a concentration of 40 ppm.The precipitation behavior was investigated before and after the addition of boron in different ESTRO SENSE S31254 alloys during the compression deformation, and the nose temperature at 950 °C and the phase dissolution temperature at 1074 °C were selected as the measurement temperature.The result showed that more σ phases were precipitated at the grain boundary of S31254 alloys, compared to the boron-added alloy.

Meanwhile, the addition of 40 ppm boron into the alloys has obviously prevented the Accessories σ phases from the austenitic matrix, and it takes longer time for the precipitation of σ phase at 950 °C.The specific influence factors of boron on the precipitation of σ phases were also further discussed.