B、Ce微合金化对S31254超级奥氏体不锈钢析出相及耐蚀性能的影响

马晋遥, 董楠, 郭振森, 韩培德

Effect of B and Ce Micro-alloying on Secondary Phase Precipitation and Corrosion Resistance of S31254 Super Austenitic Stainless Steel

MA Jinyao, DONG Nan, GUO Zhensen, HAN Peide

表2 4种S31254不锈钢在950℃时效90 min后析出相的化学成分 (mass fraction / %)

Table 2 Elemental compositions of precipitates at different positions of four S31254 stainless steels

Position Fe Cr Mo Ni 0B-1(Fig.4a-1) 39.2 26.7 22.3 8.1 0B-2(Fig.4a-2) 44.5 25.6 21.8 8.1 50B-1(Fig.4b-1) 38.7 22.9 24.6 9.9 50B-2(Fig.4b-2) 39.8 22.8 22.7 10.8 50B-20Ce-1(Fig.4c-1) 39.6 26.1 17.8 9.1 50B-20Ce-2(Fig.4c-2) 40.2 25.7 16.6 9.4 50B-50Ce-1(Fig.4d-1) 42.5 20.6 15.3 9.7 50B-20Ce-2(Fig.4d-2) 42.4 20.2 15.7 10.6