Influence of Oxygen Content on the Inclusion Formation and Pitting Corrosion Resistance of Hyper Duplex Stainless Steels

被引：18
|
作者：
Jeon, Soon-Hyeok [1 ,2 ]
Hur, Do Haeng [2 ]
Kim, Hye-Jin [1 ]
Park, Yong-Soo [1 ]
机构：
[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea
[2] Korea Atom Energy Res Inst, Nucl Mat Safety Res Div, Taejon 305353, South Korea
来源：
MATERIALS TRANSACTIONS | 2014年 / 55卷 / 12期
基金：
新加坡国家研究基金会;
关键词：
duplex stainless steel; pitting corrosion; inclusion; oxygen; polarization; CHLORIDE SOLUTION; SURFACE-ANALYSIS; PITS; BEHAVIOR; INITIATION; NUCLEATION; GROWTH;
D O I：
10.2320/matertrans.M2014164
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To determine the influence of oxygen content on the formation of inclusion in 27Cr-7Ni hyper duplex stainless steel, samples were analyzed by scanning electron microscopy. Electrochemical tests were also conducted, which revealed that an increase in oxygen content reduces the resistance to pitting corrosion of the alloys. This was attributed to the formation of numerous inclusions, as well as an increase in the area of micro-crevices that occur between the inclusion and metallic matrix, and which act as initiation sites for corrosion pits.
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页码：1872 / 1877
页数：6
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