...Guoyong Ran; Donghua Suo; Zhaoping Luo; Yiming Jiang; Jin Li; Kezhao Liu; Yangting Sun Inclusion-induced pitting is a highly random and intricate process. This study aims to investigate the impact of surface mechanical rolling treatment (SMRT) on the pitting behavior of 2205 duplex stainless steel...

...Houwei Zhang; Qing Zheng; Dengyun Wang; Ming Liu; Gang Li; Lining Xu; Lijie Qiao This study simulates the behavior of 2205 duplex stainless steel (DSS) in an actual service environment under hydrogen charging/releasing cycles. Electrochemical and immersion experiments are conducted to compare...

...L. Blanchard; K. Sotoudeh; H. Toda; K. Hirayama; J. Laurencin; H. Dong This paper is associated with a larger program of research, studying the resistance to hydrogen-induced stress cracking (HISC) of a wrought and a hot isostatically pressed UNS S31803 duplex stainless steel (DSS), with respect...

...L. Blanchard; K. Sotoudeh; J. Hesketh; G. Hinds; H. Dong The quantified microstructural analysis performed on a wrought and a hot isostatically pressed UNS S31803 duplex stainless steel (DSS) in the Part 1 publication of this study established the significance of the three-dimensional (3D...

... dissolved oxygen control which permits the investigation and on the possible use of more cost-effective materials such as the duplex stainless steels UNS S82551 and UNS S82541 (the latter is a higher strength version, but same PRE_Nw). Full-scale testing of tubes joined together with a proprietary...

...Ryotaro Yamamoto; Hiroshi Yakuwa; Matsuho Miyasaka; Nobuyoshi Hara The effects of the α/γ-phase ratio on pitting corrosion initiation and growth in cast duplex stainless steel were studied, including the preferential dissolution of the two phases inside the pits, using pitting potential measurement...

... sizes in the micrometer range) and dissolution rate has been found, showing that reducing grain size enhances active corrosion rates in environments that promote active behavior. This leads to new possibilities of industrial adjustment of the corrosion behavior of duplex stainless steels via grain size...

...L. Claeys; T. Depover; I. De Graeve; K. Verbeken This study evaluates the electrochemical hydrogen charging behavior and interaction between hydrogen and the microstructure of a duplex stainless steel. A saturation level of approximately 650 wppm is reached after 10 d of charging. The data...

...Luiza Esteves; Mônica M.A.M. Schvartzman; Wagner Reis da Costa Campos; Vanessa F.C. Lins Specimens of lean duplex and duplex stainless steel were exposed at 200°C in industrial white liquor from a Brazilian kraft mill using an autoclave to simulate the same conditions of digester processing. Tafel...

...F. Ruel; D. Tite; A. Gaugain; S. Saedlou; K. Wolski The depassivation of UNS S32304, S32202, and S32101 lean duplex stainless steels (DSS) in 26 wt% sodium chloride (NaCl) was investigated by potentiodynamic polarization to understand the selective dissolution processes in localized corrosion...

...S.P.V. Mahajanam; R.P. Case; H.E. Rincon; D.R. McIntyre; M.W. Joosten; S. Gjesdal; H. Monsen Offshore operations worldwide recently reported the presence of improperly heat-treated 2205 (UNS S32205) and 2507 (UNS S32750) duplex stainless steel (SS) pipe fittings with varying volume fractions...

...K.R. Chasse; P.M. Singh The hydrogen embrittlement (HE) behavior of UNS S31803 (2205) duplex stainless steel (DSS) was evaluated in alkaline sulfide solution (pH 13.3). The cathodic polarization response was evaluated using standard electrochemical techniques. Microhardness was used to measure...

... steel (DSS) and 25 Cr super duplex stainless steel (SDSS) at 136°C and 1.8 bar CO₂ in simulated evaporated solutions, including testing at 93% water loss, with a chloride concentration of 272,100 ppm by mass in the remaining water phase. These tests, conducted on both parent and welded steels...

... 2004 NACE International 2005 austenitic stainless steels duplex stainless steels passivation polarization repassivation scratching electrode technique stress corrosion cracking It is well known that stress corrosion cracking (SCC) of stainless steel (SS) in chloride solution...

...J.-S. Kim; H.-S. Kwon Duplex stainless steels (DSS) of 25% Cr-7% Ni-x% Mo-y% W-0.25% N (x = 1.5 to 3, and y = 0 to 3) were designed with the same pitting resistance equivalent (PRE) value of 42 by varying the contents of Mo and W. Effects of W on pitting and stress corrosion of the solution...

...K.Y. Kim; P.Q. Zhang; T.H. Ha; Y.H. Lee Addition of tungsten to duplex stainless steels (DSS) is known to suppress formation of the brittle secondary phases that may have a negative effect on general corrosion and stress corrosion cracking (SCC) properties. The effects of tungsten addition to DSS...

...A. Laitinen; H. Hänninen The chloride-induced stress corrosion cracking (SCC) resistance of nitrogen-alloyed, powder metallurgically (P/M) produced and hot isostatically pressed (HIP) duplex stainless steels (DSS) was investigated and compared to the SCC resistance of two commercial wrought (forged...

...E. Symniotis This investigation has concerned the active dissolution of a duplex stainless steel in two different acidic solutions together with a comparison of the active dissolution of the corresponding α-and γ-phases in order to establish the type of interaction between the phases. In the two...