Effect of aging on the corrosion resistance of 2101 lean duplex stainless steel

被引：101

作者：

Zhang, Lihua ^{[1
]}

Jiang, Yiming ^{[1
]}

Deng, Bo ^{[1
]}

Zhang, Wei ^{[2
]}

Xu, Juliang ^{[1
]}

Li, Jin ^{[1
]}

机构：

[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China

[2] Baosteel Co Ltd, Inst Stainless Steel, Shanghai 200431, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2009年 / 60卷 / 12期

基金：

中国博士后科学基金; 中国国家自然科学基金; 上海市科技启明星计划;

关键词：

Duplex stainless steel; Aging; Precipitation; Pitting corrosion; SIGMA-PHASE; MICROSTRUCTURAL STABILITY; MECHANICAL-PROPERTIES; PRECIPITATION; TEMPERATURE; TOUGHNESS;

D O I：

10.1016/j.matchar.2009.08.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and localized corrosion behavior of a 2101 lean duplex stainless steel aged at 700 degrees C were investigated. The results showed that changes in the microstructure of the duplex stainless steel, due to the formation of precipitates, affected its pitting corrosion resistance. The values of the pitting potential and the critical pitting temperature dropped drastically before aging time up to 30 min. The potentiostatic pitting corrosion measurement indicated more sensitive to the small amount of precipitates compared to the potentiodynamic test. Pitting nucleated mainly in the ferrite phase for the solution-annealed specimen, while the initiation of pitting corrosion for the aged specimen took place at Cr-depletion area around the precipitates, i.e. in the newly formed secondary austenite phase. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：1522 / 1528

页数：7

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