A stochastic study of the effect of the phase ratio on the corrosion resistance of duplex stainless steel

被引：2
|
作者：
He, Huan [1 ]
Liu, Zhaoxian [1 ]
Xie, Yue [2 ]
Zhang, Lixin [1 ]
Yi, Xiaoyang [1 ]
Fu, Ao [3 ]
Zhao, Wenzhen [1 ]
机构：
[1] Yantai Univ, Sch Nucl Equipment & Nucl Engn, 30 Qingquan Rd, Yantai 264005, Peoples R China
[2] Aerosun Tola Expans Joint Co Ltd, 199 Moling St, Nanjing 211100, Peoples R China
[3] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
MATERIALS LETTERS | 2024年 / 360卷
关键词：
Stochastic method; Duplex stainless steel; Phase ratio; Corrosion resistance; Potentiodynamic polarization; ELECTROCHEMICAL METHODS; ANNEALING TEMPERATURE; PIT GENERATION; BEHAVIOR; POTENTIALS;
D O I：
10.1016/j.matlet.2024.136003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the phase ratio of austenite and ferrite on the pitting potential (Epit) and passive current density of ASTM A890 grade 3A duplex stainless steel (DSS) was investigated using a stochastic method. The cumulative probability of the Epit value of DSS at different potential sweep velocities was linear, indicating that the pitting potential obeyed a normal distribution. In addition, the relationship between the pitting potential and the potential sweep velocity at various phase ratios was fitted by Epit proportional to log(v). The increase in ferrite promoted the sensitivity of the DSS to the potential sweep velocity. When the phase ratio of austenite and ferrite was 1:1, it showed better corrosion resistance. The phase ratio affected the passive current density more significantly than pitting potential.
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收藏
页数：4
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