022Cr25Ni7Mo4N双相不锈钢选择性腐蚀行为与两相组织的关系研究

丰涵,宋志刚,吴晓涵,李惠,郑文杰,朱玉亮

Relationship Between Selective Corrosion Behavior and Duplex Structure of 022Cr25Ni7Mo4N Duplex Stainless Steel

Han FENG,Zhigang SONG,Xiaohan WU,Hui LI,Wenjie ZHENG,Yuliang ZHU

表3 不同Cr，Mo，N含量022Cr25Ni7Mo4N钢的两相PREN值 (1150 ℃)

Table 3 PRENα and PRENγ values of 022Cr25Ni7Mo4N steel with different contents of Cr, Mo and N at 1150 °C

Element Content / % PRENα PRENγ Min Max Δ Min Max Δ Min Max Δ Cr 24.0 26.0 2.0 41.46 42.65 1.19 40.29 43.17 2.88 Mo 3.0 5.0 2.0 39.55 42.90 3.35 39.29 42.62 3.33 N 0.24 0.32 0.08 41.91 42.51 0.60 41.11 43.21 2.10