Effect of Aging on Pitting Corrosion Resistance of 21Cr Lean Duplex Stainless Steel with Different Molybdenum Contents

被引：0
作者：
Byung-Jun Yoon
Yong-Sik Ahn
机构：
[1] Pukyong National University,
来源：
Journal of Materials Engineering and Performance | 2023年 / 32卷
关键词：
aging; duplex stainless steel; Mo addition; pitting corrosion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of aging heat treatment on localized corrosion behavior in lean duplex stainless steel with 0-2% Mo were investigated. The cold-rolled samples were solution-treated at 1050 °C for 5 min, and during subsequent aging at 700 °C, precipitation of a secondary phase occurred at the α-phase interior and/or the α/γ-phase boundary; this precipitate was confirmed as Cr2N. Less Cr2N was precipitated with increasing Mo content than with increasing aging time. The pitting potential (Epit) and critical pitting temperature values decreased drastically, even after 5 min of aging time, compared with the as-solutionized steel; the values decreased with aging time. This behavior was likely caused by the depletion of Cr and N components related to precipitation of Cr2N at the α/γ-phase boundary.
引用
收藏
页码：5593 / 5601
页数：8
相关论文
共 80 条
[1]  
Chen Y(2020)Evaluation of Pitting Corrosion in duplex stainless steel Fe20Cr9Ni for Nuclear Power Application Acta Mater. 197 172-183
[2]  
Yang B(2019)Microstructure and Mechanical Properties of TOP-TIG-Wire and Arc Additive Manufactured Super Duplex Stainless Steel (ER2594) Mater. Sci. Eng. (A) 762 138097-3868
[3]  
Zhou Y(2018)Effect of the Heat Treatment on the Corrosion Resistance of Duplex Stainless Steels J. Mater. Eng. Perform. 27 3859-9887
[4]  
Wu Y(2018)Effect of Sigma Phase Precipitation on the Pitting Corrosion Mechanism of Duplex Stainless Steels Int. J. Electrochem. Sci. 13 9868-2145
[5]  
Zhu H(2022)Effect of Mo Addition on Laves Phase Precipitation Behavior in Fe-20% Cr-x% Nb Alloys Mater Charact. 190 112077-235
[6]  
Zhang X(2022)Role of Substitution of Ni by Co During Isothermal Aging of Superaustenitic Stainless Steels: Precipitation Behavior and Phase Transformations Metall. Mater. Trans. A 53 2130-700
[7]  
Pezzato L(2019)Understanding the Relation between Pitting Corrosion Resistance and Phase Fraction of S32101 Duplex Stainless Steel Corros. Sci. 149 226-270
[8]  
Wang Y(1992)Super Duplex Stainless Steels Mater. Sci. Technol. 8 685-1104
[9]  
Sun H(2002)The Effect of High-Temperature Exposure on the Microstructural Stability and Toughness Property in a 2205 Duplex Stainless Steel J. Mater. Sci. Eng. A 338 259-410
[10]  
Na N(2006)Comparative Study on Sigma Phase Precipitation of Three Types of Stainless Steels: Austenitic, Superferritic and Duplex Mater. Sci. Technol. 22 1098-445
12345678