Effect of annealing temperature on the pitting corrosion resistance of super duplex stainless steel UNS S32750

Tan, Hua; Jiang, Yiming; Deng, Bo; Sun, Tao; Xu, Jingkai; Li, Jin

doi:10.1016/j.matchar.2009.04.009

Cited by 241 publications

(118 citation statements)

References 21 publications

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“…Nickel stabilizes austenite, while molybdenum stabilizes ferrite and contributes to increase PREN of ferrite. Tan et al 25 reported that the pitting corrosion resistance of a super duplex stainless steel was determined by the pitting resistance equivalent number of weaker phase. If the PREN of the weaker phase increases, the global corrosion resistance of steel increases.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

Cyclic Polarization Study of Thick Welded Joints of Lean Duplex Stainless Steel for Application in Biodiesel Industry

et al. 2016

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Thick welded joints of UNS S32304 lean duplex stainless steel (LDSS) has been studied in acidified glycerin, a byproduct of biodiesel plants, using cyclic polarization technique. LDSS S32304 thick plates were welded by different processes commonly employed in the fabrication process: shielded metal arc welding, gas metal arc welding and flux cored arc welding. The electrochemical behavior of different weldment zones was characterized. Transmission electron microscopy and scanning electron microscopy (SEM) were used for sample characterization. SEM images showed that the heat affected zone was the most critical zone for pitting corrosion for all samples. The results were associated to the microstructural features of the materials. Generally, the breakdown potential of the top regions of welds was higher in acidified glycerin than the weld root for welds fabricated with two different filler metals. Basically, all the welded samples exhibited similar or higher corrosion resistance, compared with the corresponding base metal.

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Section: Electrochemical Behaviormentioning

confidence: 99%

Cyclic Polarization Study of Thick Welded Joints of Lean Duplex Stainless Steel for Application in Biodiesel Industry

et al. 2016

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“…Super Duplex Stainless Steels (SDSS) are known to exhibit high mechanical and corrosion resistance properties, which recommend them to be used in hard exploitation conditions, such as those encountered in oil, chemical, marine and nuclear industrial fields [1][2][3][4][5][6][7][8]. A less favourable aspect is the poor hot ductility of SDSS, which makes their hot working to be very difficult [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The microstructural evolution of SDSS after hot deformation and subsequent solution annealing is very important for preventing the formation of deleterious intermetallic phases and, therefore, the easiest solution to achieve the desired properties seems to be a proper control of thermo-mechanical treatment [21][22][23][24][25]. The solution annealing improves the mechanical and corrosion characteristics of SDSS by dissolving the secondary deleterious phases at high temperatures, but also the annealing temperature can affect the δ-Fe and γ-Fe phases proportion, modifying this way the alloying elements partitioning in the two phases (δ-Fe being enriched in Cr and Mo and γ-Fe in N) and consequently the corrosion resistance of each phase [1,26]. In this regard, studying the correlation between the solution treatment parameters and microstructural characteristics can be very helpful [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Influence of Solution Treatment Temperature on Microstructural Properties of an Industrially Forged UNS S32750/1.4410/F53 Super Duplex Stainless Steel (SDSS) Alloy

Cojocaru

Şerban

Angelescu

et al. 2017

Metals

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Abstract:In this present study, the influence of solution annealing temperature on microstructural properties of a forged Super Duplex Stainless Steel (SDSS) was investigated by SEM-BSE (Scanning Electron Microscopy-Backscattered Electrons) and SEM-EBSD (Scanning Electron Microscopy-Electron Backscatter Diffraction) techniques. A brief solution treatment was applied to the forged super duplex alloy, at different temperatures between 800 • C and 1100 • C, with a constant holding time of 0.6 ks (10 min). Microstructural characteristics such as nature, weight fraction, distribution and morphology of constituent phases, average grain-size and grain misorientation were analysed in relation to the solution annealing temperature. Experimental results have shown that the constituent phases in the SDSS alloy are δ-Fe, γ-Fe and σ (Cr-Fe) and that their properties are influenced by the solution treatment temperature. SEM examinations revealed microstructural modifications induced by the Cr rich precipitates along the δ/γ and δ/δ grain boundaries, which may significantly affect the toughness and the corrosion resistance of the alloy. Solution annealing at 1100 • C led to complete dissolution of σ (Cr-Fe) phase, the microstructure being formed of primary δ-Fe and γ-Fe. The orientation relationship between δ/δ, γ/γ and δ/γ grains was determined by electron back scattering diffraction (EBSD). Both primary constituent phase's microhardness and global microhardness were determined.

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“…정량 분석된 Cu와 Gd의 상분율을 확인하였을 때, Table 2에 나타난 Cu 9 Gd 2 상으로 분석할 수 있다. [15][16][17][18]. 한준희의 말을 따르 면 나노 인덴테이션의 경도 값을 이용하여 비커스 경도 값으 로 환산할 수 있다 [19].…”

Section: 임재한·정현도·안지호·문병문unclassified

Microstructure and Fracture Property of 1A Grade Duplex Stainless Steel with the Addition of Gadolinium

Lim¹,

Jung²,

Ahn³

et al. 2016

Journal of Korea Foundry Society

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CD4MCU duplex stainless steel with gadolinium was fabricated as a neutron absorbing material by the air induction melting method. The gadolinium formed intermetallic compounds of Cu-Gd-Fe. There were no significant differences in hardness or ultimate tensile strength between experimental alloys. With the addition of gadolinium the yield strength of the cast alloy significantly increased, from 478.8 ± 11.6 to 514.2 ± 29.9 MPa, whereas elongation of the cast alloy decreased with the addition of gadolinium, from 26.0 ± 7.1 to 7.0 ± 2.5% due to the formation of gadolinium based intermetallic compounds.

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Effect of annealing temperature on the pitting corrosion resistance of super duplex stainless steel UNS S32750

Cited by 241 publications

References 21 publications

Cyclic Polarization Study of Thick Welded Joints of Lean Duplex Stainless Steel for Application in Biodiesel Industry

Cyclic Polarization Study of Thick Welded Joints of Lean Duplex Stainless Steel for Application in Biodiesel Industry

Influence of Solution Treatment Temperature on Microstructural Properties of an Industrially Forged UNS S32750/1.4410/F53 Super Duplex Stainless Steel (SDSS) Alloy

Microstructure and Fracture Property of 1A Grade Duplex Stainless Steel with the Addition of Gadolinium

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