Comparison Between Hot Rolled and Powder Metallurgy–Hot Isostatic Pressing (PM-HIP) Processed Duplex Stainless Steel UNS S32205

Barros, Tatiana Silva; Pecly, P. H. R.; Pardal, Juan Manuel; Gonzaga, A. C.; Tavares, Sérgio Souto Maior

doi:10.1007/s11665-022-06616-8

Cited by 12 publications

(4 citation statements)

References 11 publications

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“…In addition, there are some dimples and a fibrous network on the border fracture surfaces, which is characterized by a ductile fracture. The fracture surface has an ellipitical shape, as already observed in a DSS UNS S32205 hot rolled tube 23 . This seems to be a typical behaviour of seamless tubes, due to their anisotropic microstructure.…”

Section: Resultssupporting

confidence: 67%

Mechanical Properties of UNS S39274 Superduplex Stainless Steel Work Hardened and Solution Annealed

et al. 2022

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UNS S39274 is a W-alloyed superduplex stainless steel used in critical services in the oil and gas production. This material was selected for tubullars used in oil country tubular goods, below the Christmas tree. In order to achieve high mechanical strength the seamless tubes are cold drawn in a costly operation. In this work the mechanical properties of a cold drawn seamless were characterized and compared to three solution treated materials. Tensile curves were obtained and modelled by Hollomon's, Ludwik's and Voce's models, where the last one presented the higher correlation coefficients in all cases. The hardness and impact toughness at -46 o C were measured and discussed. The results were analyzed taking into aconunt the microstructural changes produced by cold drawning and annealing.

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Section: Resultssupporting

confidence: 67%

Mechanical Properties of UNS S39274 Superduplex Stainless Steel Work Hardened and Solution Annealed

et al. 2022

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“…Because high amounts of Cr and Mo in the secondary phase do not dissolve in austenite but readily dissolve in ferrite, the transformation results in ferrite. This difference in volume fraction on austenite and ferrite causes the difference in chemical composition on each phase [4,5,[20][21][22][23][24][25].…”

Section: Microstructurementioning

confidence: 99%

“…9) with heat treatment conditions of super duplex stainless steel UNS S32750. The CPT is used to evaluate the corrosion resistance of duplex stainless steel by comparing the temperature at which the passivation layer is destroyed [5,20,21]. The corrosion resistance was compared considering the volume fraction of the secondary phase, and the results are shown in Figure 10.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Effects of the Volume Fraction of the Secondary Phase after Solution Annealing on Electrochemical Properties of Super Duplex Stainless Steel UNS S32750

Kim

Chung

Shin

2023

Metals

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Super duplex stainless steel (SDSS) is used for manufacturing large valves and pipes in offshore plants because of its excellent strength and corrosion resistance. Large valves and pipes are manufactured by forging after casting, and the outside and inside microstructures are different owing to the difference in the cooling rate caused by the thermal conductivity. This microstructural variation causes cracks during solution annealing, which breaks the materials. To study the corrosion resistance of the SDSS forged material, the influence of the microstructure according to the difference between the inside and outside cooling rates of the cast SDSS was evaluated. To analyze the effects of the secondary phase fraction before solution annealing on the solution and corrosion resistance, the corrosion resistance with and without solution annealing was measured using the potentiodynamic polarization test and critical temperature test after the precipitation of the secondary phase. In the potentiodynamic polarization test, the secondary phase decreased the activation polarization and increased the corrosion rate. The critical pitting temperature exhibited the effect of the secondary phase.

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“…Solution annealing optimizes the corrosion resistance because it equalizes the pitting resistance (PRE, wt.% Cr + 3.3 wt.% Mo + 16 wt.% N) of austenite and ferrite [4]. The CPT is used to evaluate the corrosion resistance of duplex stainless steel by comparing the temperature at which the passivation layer is destroyed [5,17,18]. The corrosion resistance was compared considering the volume fraction of the secondary phase, and the results are shown Figure 10.…”

Section: Electrochemical Propertiesmentioning

confidence: 99%

Effects of the Volume Fraction of the Secondary Phase After So-Lution Annealing on Electrochemical Properties of Super Duplex Stainless Steel UNS S32750

Shin¹,

Chung²,

Kim³

2023

Preprint

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Super duplex stainless steel (SDSS) is used for manufacturing large valves and pipes in offshore plants because of its excellent strength and corrosion resistance. Large valves and pipes are manufactured by forging after casting, and the outside and inside microstructures are different owing to the difference in the cooling rate caused by the thermal conductivity. This microstructural variation causes cracks during solution annealing, which breaks the materials. To study toe corrosion resistance of the SDSS forged material, the microstructure was conducted based on the difference in the cooling rate between the inside and outside of the cast SDSS. To analyze the effects of the secondary phase fraction before solution annealing on the solution and corrosion resistance, the corrosion resistance with and without solution annealing was measured using the potentiodynamic polarization test and critical temperature test after the precipitation of the secondary phase. In the potentiodynamic polarization test, the secondary phase decreased the activation polarization and increased the corrosion rate. The critical pitting temperature exhibited the effect of the secondary phase.

show abstract

Comparison Between Hot Rolled and Powder Metallurgy–Hot Isostatic Pressing (PM-HIP) Processed Duplex Stainless Steel UNS S32205

Cited by 12 publications

References 11 publications

Mechanical Properties of UNS S39274 Superduplex Stainless Steel Work Hardened and Solution Annealed

Mechanical Properties of UNS S39274 Superduplex Stainless Steel Work Hardened and Solution Annealed

Effects of the Volume Fraction of the Secondary Phase after Solution Annealing on Electrochemical Properties of Super Duplex Stainless Steel UNS S32750

Effects of the Volume Fraction of the Secondary Phase After So-Lution Annealing on Electrochemical Properties of Super Duplex Stainless Steel UNS S32750

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