Effects of Mn on the localized corrosion behavior of Fe–18Cr alloys

Park, Kyungjin; Kwon, Hyuk‐Sang

doi:10.1016/j.electacta.2010.01.006

Cited by 70 publications

(33 citation statements)

References 26 publications

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“…Nickel content plays an important role in the stability of austenitic structure at high temperatures hence highnickel alloys provide good resistance to a wide variety of corrosive media and improves the physical and mechanical properties of stainless steel [7][8][9]. Manganese because of having lower cost is a good candidate to replace nickel as an austenite stabilizing element [10][11][12][13][14][15]. Manganese also increases the solubility of nitrogen [16].…”

Section: Introductionmentioning

confidence: 99%

On the corrosion resistance of AISI 316L-type stainless steel coated with manganese and annealed with flow of oxygen

2016

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AISI 316L-type stainless steel was coated with 300-nm-thick Mn thin films and post-annealed at 673 K with a constant flow of oxygen (250 cm 3 /min). The films crystallographic and morphological structures were analyzed using X-ray diffraction (XRD) and atomic force microscopy (AFM) before corrosion test and scanning electron microscopy (SEM) after corrosion test. Corrosion behavior of the samples in 0.3, 0.5 and 0.6 M NaCl solutions was investigated by means of potentiodynamic and electrochemical impedance spectroscopy (EIS) techniques. Results showed that the corrosion inhibition of annealed Mn/SS316L in all NaCl solutions with different concentrations is higher than that of bare SS316L. A correlation is achieved between the structural variation of the films with the potentiodynamic and EIS corrosion results.

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Section: Introductionmentioning

confidence: 99%

On the corrosion resistance of AISI 316L-type stainless steel coated with manganese and annealed with flow of oxygen

2016

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“…It seems that sulfur deteriorates the corrosion resistance, thus higher corrosion current values were detected for the X4MnSiAlNbTi27-4-2 steel. Park and Kwon [17] found that a size of MnS inclusions increased with the increase Mn concentration in fe-18cr-6Mn and fe-18cr-12Mn steels. Therefore, corrosion processes occurring in the X4MnSiAlNbTi27-4-2 steel could be also to a lesser extend accelerated by the higher Mn content.…”

Section: Effect Of Non-metallic Inclusions On the Corrosion Resistancmentioning

confidence: 99%

“…It has been reported [16][17][18] that elements such as manganese and sulfur have a negative influence on the corrosion resistance of high-Mn steels. Manganese combines with sulfur creating MnS inclusions, which are vulnerable for pitting corrosion attack [6][7][8][9][10]19].…”

Section: Effect Of Non-metallic Inclusions On the Corrosion Resistancmentioning

confidence: 99%

Corrosion Resistance and Pitting Behaviour of Low-Carbon High-Mn Steels in Chloride Solution

Grajcar

Grzegorczyk

Kozłowska

2016

Archives of Metallurgy and Materials

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CorrosIon rEsIstanCE and pIttIng bEhavIour of low-Carbon hIgh-Mn stEEls In ChlorIdE solutIonCorrosion resistance of the X4MnSiAlNbTi27-4-2 and X6MnSiAlNbTi26-3-3 type austenitic steels, after hot deformation as well as after cold rolling, were evaluated in 3.5% NaCl solution using potentiodynamic polarization tests. A type of nonmetallic inclusions and their pitting corrosion behaviour were investigated. Additionally, the effect of cold deformation on the corrosion resistance of high-Mn steels was studied. The SEM micrographs revealed that corrosion damage formed in both investigated steels is characterized by various shapes and an irregular distribution at the metallic matrix, independently on the steel state (thermomechanically treated or cold worked). Corrosion pits are generated both in grain interiors, grain boundaries and along the deformation bands. Moreover, corrosion damage is stronger in cold deformed steels in comparison to the thermomechanically treated specimens. EDS analysis revealed that corrosion pits preferentially nucleated on MnS and AlN inclusions or complex oxysulphides. The morphology of corrosion damage in 3.5% NaCl supports the data registered in potentiodynamic tests.

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“…K. J. Park and H. S. Kwon 13 found that the size of the MnS inclusions increased with an increase in the Mn concentration in Fe-18Cr-6Mn and Fe-18Cr-12Mn steels. The shape, composition and distribution of inclusions have significant effects on the corrosion resistance too.…”

Section: Introductionmentioning

confidence: 99%

Effect of sulphide inclusions on the pitting-corrosion behaviour of high-Mn steels in chloride and alkaline solutions

Grajcar

Płachcińska²

2016

Mater. Tehnol.

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The corrosion behaviour of the 27Mn-4Si-2Al-and 26Mn-3Si-3Al-type austenitic steels were evaluated in chloride 3.5 % NaCl and alkaline 0.1-M NaOH environments using potentiodynamic polarization tests. The type of non-metallic inclusions and their pitting-corrosion behaviour were investigated. In the chloride solution, both the steels exhibited a lower corrosion resistance in comparison to the alkaline solution. The high-Mn steels showed evidence of pitting and uniform corrosion, both in the chloride and alkaline solutions. SEM micrographs revealed that the corrosion pits are characterized by various shapes and an irregular distribution at the metallic matrix. Corrosion damage is more numerous in the chloride solution than in the alkaline solution. EDS analyses revealed that the corrosion pits nucleated on MnS inclusions or complex oxysulphides. The chemical composition of the steels (change in the Al and Si contents) does not affect the privileged areas of pit nucleation, whereas it influences the electrochemical behaviour of the steels in the chloride solution. Keywords: high-Mn steel, austenitic steel, non-metallic inclusion, corrosion resistance, pitting corrosion, potentiodynamic polarization test Korozijsko obna{anje avstenitnih jekel 27Mn-4Si-2Al in 26Mn-3Si-3Al je bilo ocenjeno v raztopini 3,5 % NaCl in v alkalni raztopini 0,1 M NaOH, s pomo~jo potenciodinami~nih polarizacijskih preizkusov. Preiskovana je bila vrsta nekovinskih vklju~kov in njihovo pona{anje pri jami~asti koroziji. V raztopini kloridov sta obe jekli, v primerjavi z alkalno raztopino, pokazali manj{o korozijsko obstojnost. Jekla z visoko vsebnostjo Mn so pokazala jami~asto in splo{no korozijo v obeh raztopinah, tako v kloridni kot v alkali~ni. SEM-posnetki so pokazali korozijske jamice razli~nih oblik in njihovo neenakomerno razporeditev po kovinski osnovi. Korozijske po{kodbe so bolj {tevilne v kloridni raztopini kot pa v alkalni raztopini. EDS-analize so pokazale, da korozijske jamice nastajajo na vklju~kih MnS ali na kompleksnih oksisulfidih. Kemijska sestava jekel (spremembe v vsebnosti Al in Si) ni vplivala na prednostna mesta nukleacije jamic, medtem ko je vplivala na elektrokemijsko pona{anje jekel v raztopini kloridov. Klju~ne besede: jekla z veliko vsebnostjo Mn, avstenitno jeklo, nekovinski vklju~ki, odpornost na korozijo, jami~asta korozija, potenciodinami~ni polarizacijski preizkus

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Effects of Mn on the localized corrosion behavior of Fe–18Cr alloys

Cited by 70 publications

References 26 publications

On the corrosion resistance of AISI 316L-type stainless steel coated with manganese and annealed with flow of oxygen

On the corrosion resistance of AISI 316L-type stainless steel coated with manganese and annealed with flow of oxygen

Corrosion Resistance and Pitting Behaviour of Low-Carbon High-Mn Steels in Chloride Solution

Effect of sulphide inclusions on the pitting-corrosion behaviour of high-Mn steels in chloride and alkaline solutions

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