Corrosion of an UNS S31803 distillation column for acetic acid recovery

Colombo, Alessandra; Trasatti, Stefano P.

doi:10.1016/j.engfailanal.2015.07.017

Cited by 8 publications

(2 citation statements)

References 18 publications

(19 reference statements)

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“…Duplex stainless steels are more resistant to intergranular corrosion than austenitic stainless steels, because the combination of the austenite-ferrite boundary and the ferrite phase enables the precipitation of chromium carbides without severely depleting chromium at the phase boundaries [1] . The high solubility and slow diffusion rate of hydrogen in the austenite phase of duplex stainless steel make it more difficult for hydrogen to diffuse, distinguishing duplex stainless steel from ferritic stainless steel [2] . However, as application fields have expanded, it has become clear that duplex stainless steel suffers from corrosion problems.…”

Section: Introductionmentioning

confidence: 99%

A review on pitting corrosion and environmentally assisted cracking on duplex stainless steel

Liu¹,

Du²,

Wang³

et al. 2023

Microstructures

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Duplex stainless steel is widely used in the petrochemical, maritime, and food industries. However, duplex stainless steel has the problem of corrosion failures during use. This topic has not been comprehensively and academically reviewed. These factors motivate the authors to review the developments in the corrosion research of duplex stainless steel. The review found that the primary reasons for the failure of duplex stainless steels are pitting corrosion and chloride-induced stress corrosion cracking. After being submerged in water, the evolution of the passive film on the duplex stainless steel can be loosely classified into three stages: nucleation, rapid growth, and stable growth stages. Instead of dramatic rupture, the passive film rupture process is a continuous metal oxidation process. Environmental factors scarcely affect the double-layer structure of the passive film, but they affect the film's overall thickness, oxide ratio, and defect concentration. The six mechanisms of alloying elements on pitting corrosion are summarized as stabilization, ineffective, soluble precipitates, soluble inclusions, insoluble inclusions, and wrapping mechanisms. In environments containing chlorides, ferrite undergoes pitting corrosion more easily than austenite. However, the pitting corrosion resistance reverses when sufficiently large deformation is used. The mechanisms of pitting corrosion induced by precipitates include the Cr-depletion, microgalvanic, and high-stress field theories. Chloride-induced cracks always initiate in the corrosion pits and blunt when encountering austenite. Phase boundaries are both strong hydrogen traps and rapid hydrogen diffusion pathways during hydrogen-induced stress cracking.

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Section: Introductionmentioning

confidence: 99%

A review on pitting corrosion and environmentally assisted cracking on duplex stainless steel

Liu¹,

Du²,

Wang³

et al. 2023

Microstructures

View full text Add to dashboard Cite

show abstract

“…Раз берем пример из открытых источников. Авторы рабо ты[21] анализировали причины коррозионных повре ждений ректификационной колонны установки по производству ацетата целлюлозы, изготовленной из дуплексной стали UNS S31803. Технологическая жид кость представляла собой водный раствор 80 %ной уксусной кислоты, который отделялся ректификацией.…”

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Problems of selection of corrosion-resistant steels and alloys in oil and gas industry for operating conditions

Fedorov,

Karasev,

Alekseeva

et al. 2024

Izv. vysš. učebn. zaved., Čern. metall.

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Corrosion-resistant steels and alloys have a number of unique properties. This allows them to be used in various industries. Despite their name, they are to some extent subject to various types of corrosion and corrosion-mechanical damage. This article discusses cases of corrosion damage of products made of corrosion-resistant steels and alloys in the oil and gas industry. The reasons of material failure can be incorrect exploitation of material, low-quality material of products, and incorrect selection of material for operating conditions. For each group of failure causes the examples from open sources and from the practice of the team of authors of this work are considered. The paper substantiates the importance of preliminary laboratory studies of corrosion-resistant materials and their testing with simulation of environmental factors. It is necessary for reasonable choice under specific operating conditions. It is shown that in practice the reasonable choice of corrosion-resistant materials is not always given due attention, so the seemingly economically favorable solutions may turn out to be incorrect. The main focus is made on the practical side of the issue in order to avoid such problems in the future. The relevance of the work is confirmed by the recent acute problem of substitution of foreign steel grades.

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Tribocorrosion behavior of martensitic stainless cutlery steel in pressed Shanghai Bok Choy

Xie,

Guo,

Zhu

et al. 2024

Corrosion Science

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Corrosion of an UNS S31803 distillation column for acetic acid recovery

Cited by 8 publications

References 18 publications

A review on pitting corrosion and environmentally assisted cracking on duplex stainless steel

A review on pitting corrosion and environmentally assisted cracking on duplex stainless steel

Problems of selection of corrosion-resistant steels and alloys in oil and gas industry for operating conditions

Tribocorrosion behavior of martensitic stainless cutlery steel in pressed Shanghai Bok Choy

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