Effects of Isothermal Aging on the Microstructure Evolution and Pitting Corrosion Resistance of Lean Duplex Stainless Steel UNS S32003

被引：10

作者：

He, Liang ^{[1
]}

Wirian, Lovelyn ^{[1
]}

Singh, Preet M. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30318 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50A卷 / 05期

关键词：

SIGMA-PHASE PRECIPITATION; TEMPERATURE; BEHAVIOR;

D O I：

10.1007/s11661-019-05189-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

UNS S32003 materials were aged at temperatures in the range of 873K to 1173K (600 degrees C to 900 degrees C) for 30 minutes and 2 hours. Nitrides were found to precipitate along the ferrite/austenite phase boundaries and within the ferrite phase. The precipitation kinetics was the fastest at 1073K (800 degrees C), at which temperature the Cr-depleted zones were observed to be in the vicinity of the precipitates. Precipitation and resultant Cr-depleted zone led to the highest pitting susceptibility of the UNS S32003, aged at 1073K (800 degrees C), when tested in 0.6mol/L NaCl solution. To observe the precipitation evolution, the UNS S32003 specimens were aged at 973K (700 degrees C) for different time periods for up to 120 hours. Within aging time up to 24 hours at 973K (700 degrees C), only nitrides precipitates were observed and an intermetallic phase was observed after 120 hours of aging along with an increase in the percentage of precipitates. Pitting potential dropped with increasing aging time and metastable pitting rate increased with longer aging time period, both indicating a negative effect of aging on pitting corrosion resistance of the lean duplex stainless steel UNS S32003. (C) The Minerals, Metals & Materials Society and ASM International 2019

引用

页码：2103 / 2113

页数：11

共 27 条

[11]

He L., 2017, CORROSION 2017, P8

[12]

Leif, 2012, WELD WORLD, V56, P65, DOI [10.1007/BF03321351, DOI 10.1007/BF03321351]

[13] Precipitation and Phase Transformations in 2101 Lean Duplex Stainless Steel During Isothermal Aging [J].

Maetz, Jean-Yves ;

Cazottes, Sophie ;

Verdu, Catherine ;

Kleber, Xavier .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (01) :239-253

[14] Influence of the Heterogeneous Nucleation Sites on the Kinetics of Intermetallic Phase Formation in Aged Duplex Stainless Steel [J].

Melo, Elis Almeida ;

Magnabosco, Rodrigo .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2017, 48A (11) :5273-5284

[15] Qualitative and quantitative analysis of σ and χ phases in 2205 duplex stainless steel [J].

Michalska, Joanna ;

Sozanska, Maria .

MATERIALS CHARACTERIZATION, 2006, 56 (4-5) :355-362

[16] Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds [J].

Muthupandi, V ;

Srinivasan, PB ;

Seshadri, SK ;

Sundaresan, S .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 358 (1-2) :9-16

[17] Investigation of the effect of solution annealing temperature on critical pitting temperature of 2205 duplex stainless steel by measuring pit solution chemistry [J].

Naghizadeh, M. ;

Moayed, M. H. .

CORROSION SCIENCE, 2015, 94 :179-189

[18] Effects of sigma phase on the initiation and propagation of pitting corrosion of duplex stainless steel [J].

Park, CJ ;

Rao, VS ;

Kwon, HS .

CORROSION, 2005, 61 (01) :76-83

[19] Effect of the Heat Treatment on the Corrosion Resistance of Duplex Stainless Steels [J].

Pezzato, Luca ;

Lago, Mattia ;

Brunelli, Katya ;

Breda, Marco ;

Calliari, Irene .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2018, 27 (08) :3859-3868

[20] THE INFLUENCE OF AGING ON THE INTERGRANULAR CORROSION OF 22-CHROMIUM 5-NICKEL DUPLEX STAINLESS-STEEL [J].

RAVINDRANATH, K ;

MALHOTRA, SN .

CORROSION SCIENCE, 1995, 37 (01) :121-+

← 1 2 3 →