Optimizing annealing temperature for Duplex Stainless Steel 2205 in acidic NaCl environments according to corrosion resistance

被引：10
|
作者：
Suo, Donghua [1 ]
Dai, Wei [1 ]
Liu, Yuanyuan [1 ]
Zhang, Bo [1 ]
Zheng, Kangkang [1 ]
Tu, Wenrui [1 ]
Jiang, Yiming [1 ]
Li, Jin [1 ,2 ]
Sun, Yangting [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, State Key Lab Mol Engn Polymers, Shanghai 200438, Peoples R China
[2] Hainan Univ, Sch Mat Sci & Engn, State Key Lab Marine Resource Utilizat South China, Haikou 570228, Peoples R China
来源：
CORROSION SCIENCE | 2023年 / 222卷
基金：
中国国家自然科学基金;
关键词：
Optimum annealing temperature; Bipolar electrochemistry; Acidic environment; Duplex stainless steel; Ni content; PASSIVE FILMS; PITTING CORROSION; BEHAVIOR; MECHANISM; NICKEL; SUPER; MICROSTRUCTURE; EVOLUTION; THICKNESS; BREAKDOWN;
D O I：
10.1016/j.corsci.2023.111374
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this article, we reveal that the optimal annealing temperature for DSS 2205 differs between acidic and neutral NaCl environments, rendering the limitation of utilizing pitting resistance equivalent number (PREN) to optimize annealing temperature. Elevating the annealing temperature leads to a better corrosion resistance of ferrite phase in the activation zone through Ni redistribution. In acidic NaCl systems, the optimal annealing temperature for DSS 2205 is co-governed by the Ni content and PREN. This conclusion offers a guidance for heat treatment process of DSS to be used in acidic environments.
引用
收藏
页数：15
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