Effects of Heat Treatment on Microstructure and Pitting Corrosion Resistance of 2205 Duplex Stainless Steel

被引：0
|
作者：
Liu, Xiangyong [2 ]
Xia, Kada [1 ]
Niu, Junchao [1 ]
Xiang, Zhen [1 ]
Yan, Biao [1 ]
Lu, Wei [1 ]
机构：
[1] Tongji Univ, Shanghai Key Lab D&A Met Funct Mat, Sch Mat Sci & Engn, Shanghai 200092, Peoples R China
[2] Jinan Rail Transit Grp Co Ltd, Jinan 250101, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2015年 / 10卷 / 11期
关键词：
2205 Duplex stainless steel; Heat treatment; Intermediate phase; Pitting; SIGMA-PHASE; R-PHASE; IMPACT TOUGHNESS; BEHAVIOR;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this study, the effect of heat treatment processes on microstructure and pitting corrosion resistance of 2205 duplex stainless steel within the temperature range of 500 degrees C similar to 650 degrees C. was investigated. According to TEM analysis, intermediate phase and R phase begin to precipitate after aging 48h at 590 degrees C and sigma phase begins to precipitate after aging 5h at 650 degrees C. The anodic polarization results show that the pitting resistance of samples was reduced both at aging temperatures of 590 degrees C and 650 degrees C. The results also indicate that the precipitation of intermediate phase obviously decreased the pitting corrosion resistance of 2205 duplex stainless steel. In addition, it was observed that the pits inclined to nucleate and grow near the precipitations in the ferrite and alpha/gamma interface boundary.
引用
收藏
页码：9359 / 9369
页数：11
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