Effect of the Heat Treatment on the Corrosion Resistance of Duplex Stainless Steels

被引：52

作者：

Pezzato, Luca ^{[1
]}

Lago, Mattia ^{[1
]}

Brunelli, Katya ^{[1
]}

Breda, Marco ^{[1
]}

Calliari, Irene ^{[1
]}

机构：

[1] Univ Padua, Dept Ind Engn, Via Marzolo 9, I-35131 Padua, Italy

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2018年 / 27卷 / 08期

关键词：

chi phase; critical pitting temperature; duplex stainless steels; nitrides; pitting corrosion; sigma phase; CRITICAL PITTING TEMPERATURE; PHASE PRECIPITATION; SIGMA; MICROSTRUCTURE; TOUGHNESS; EVOLUTION; BEHAVIOR; KINETICS;

D O I：

10.1007/s11665-018-3408-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Duplex stainless steels (DSS) are biphasic austenitic-ferritic steels in which the best combination of mechanical and corrosion resistance properties is achieved for an almost equal volume fraction of the phases. In this work, the effect of secondary phases precipitation on the corrosion resistance of four DSS grades (2101, 2304, 2205 and 2507), after isothermal aging in the critical temperature range 750-900 A degrees C, was studied. The corrosion resistance was investigated by potentiodynamic polarization tests in both 0.6 M NaCl solution (pH 7) and in an acid chlorinated solution (pH 3) at room temperature. Moreover, the critical pitting temperature was determined according to ASTM G150. The results showed that secondary phases precipitation mainly influenced the resistance to corrosion of the lean duplex grades.

引用

页码：3859 / 3868

页数：10

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