The effect of copper addition on the corrosion resistance of cast duplex stainless steel

Lima, Hillane Mirelle Lopes Ferreira de; Tavares, Sérgio Souto Maior; Martins, Marcelo Guerra; Araújo, Walney Silva

doi:10.1016/j.jmrt.2019.01.018

Cited by 17 publications

(4 citation statements)

References 39 publications

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“…As it was known this phase reduce hot ductility and gave the possibility for precipitation hardening. However, some authors [34] who investigated duplex steels with copper content about 2.5% have not found it, but others [35] noticed its presence in materials with about 3% of Cu. The obtained results clearly shows that the 2.5% copper addition, in the studied temperature-deformation range, eliminates the tendency to precipice the σ phase as a result of hot plastic deformation.…”

Section: Obtained Resultsmentioning

confidence: 99%

Influence of Copper Addition on Sigma Phase Precipitation during Hot Deformation of Duplex Steel

2020

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The paper presents an experimental study on microstructure changes in duplex steel after hot deformation. Duplex steels and cast steels are characterized by a multiphase microstructure. They are relatively new materials with great contributions to the many fields of industries. Due to the fact of deforming two different phase austenite and ferrite those materials have a complex plasticity. This work is a continuation and complementation of previous works and is a significant supplement to information presented in them. The article concerns precipitation phenomena and changes in the microstructure of two grades of ferritic-austenitic steels: X2CrNiMoN25-7-4 and X2CrNiMoCuN25-6-3. Those steels have a very similar chemical composition, differing by only 2.5% copper content. An important aspect presented in the work is we observed that adding 2.5% copper prevented precipitation of the destructive sigma phase during the hot deformation.

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Section: Obtained Resultsmentioning

confidence: 99%

Influence of Copper Addition on Sigma Phase Precipitation during Hot Deformation of Duplex Steel

2020

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“…: 17-4PH paslanmaz çelik) görüldüğü gibi sıcak sünekliğin azalmasına ve çökelme sertleşmesine neden olabilir [4,32,33]. Cu, östenit oluşumuna katkı sağlar ve ferrit miktarını önemli ölçüde azaltır [34].…”

Section: Alaşim Elementleri̇ni̇n Dubleks Paslanmaz çEli̇klere Etki̇si...unclassified

Hyper Duplex Stainless Steels and Their Weldability

Özdemir

Fındık

YILMAZ³

2023

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Ferrit ve östenit fazını yüksek yoğunluklarda içerisinde bulunduran dubleks paslanmaz çelik sınıfının en gelişmiş ürünleri olan hiper dubleks paslanmaz çelikler (HDSS), maliyeti ve üretim süreci kompleksliği nedeniyle henüz oldukça niş ve kısıtlı kullanım alanına sahiptir. Ancak gelişen teknoloji ve çeşitlenen ihtiyaçlar dâhilinde kullanım alanlarının genişlemesi ve kullanımının yaygınlaşması beklenmektedir. Oldukça yeni olan bu ürün grubunun kullanımının yaygınlaşması işlenebilirlik ve kaynaklanabilirlik özelliklerine de bağlıdır. Füzyon kaynak yöntemleri, malzemenin termal geçmişini ve dolayısıyla dubleks paslanmaz çelik özelinde α/γ dengesini değiştirebilmektedir. Bu yüzden düşük ısı girdisi ile bazı ark kaynakları ile beraber sürtünme karıştırma kaynak yöntemi de hiper dubleks paslanmaz çeliklerin birleştirilmesinde uygulanan yöntemlerdir. Sunulan bu çalışmada hiper dubleks paslanmaz çelikler tanıtılarak üretim yöntemleri, kullanım alanları ve avantajlarına değinilmiş, uygun kaynak yöntemleri ve kaynaklanabilirliği hakkında bilgiler verilerek önceden yapılmış çalışmalar değerlendirilmiştir.

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“…The last two decades have seen a rapid increase in the development and widespread use of DSSs, with numerous studies investigating their microstructure [10][11][12][13][14][15][16][17][18] and generally identifying them as having a ratio of 44:56 of the austenite (γ) and ferrite (α) phases [19]. Additionally, the σ phase can be formed along with precipitates such as M 23 C 6 , χ, σ, γ', or Cr 2 N, either within the matrix and/or on grain boundaries after an aging treatment [20,21].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ag-Rich Nano-Precipitates on the Antibacterial Properties of 2205 Duplex Stainless Steel

Chao

Wei

et al. 2020

Metals

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The effects of the addition of silver on the microstructural variation and antibacterial performance of 2205 duplex stainless steel after solution and aging treatment were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM, and antibacterial testing. The microstructure showed that 2205Ag is composed of a ferrite (α) + austenite (γ) duplex phase and Ag-rich nano-precipitates (Ag-NPs). The morphology of the Ag-NPs varied from spherical to polygonal after aging treatment at 450 °C for 4 h. These precipitates were identified as face-centered-cubic structures with a lattice parameter of a = 0.354 nm and a mismatch of δ = 0.84% relative to the austenite matrix. Notably, 2205Ag with polygonal Ag-NPs exhibited excellent antibacterial properties that were superior to those of 2205Ag with spherical Ag-NPs.

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The effect of copper addition on the corrosion resistance of cast duplex stainless steel

Cited by 17 publications

References 39 publications

Influence of Copper Addition on Sigma Phase Precipitation during Hot Deformation of Duplex Steel

Influence of Copper Addition on Sigma Phase Precipitation during Hot Deformation of Duplex Steel

Hyper Duplex Stainless Steels and Their Weldability

Effects of Ag-Rich Nano-Precipitates on the Antibacterial Properties of 2205 Duplex Stainless Steel

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