Pitting corrosion behavior in advanced high strength steels

Park, Il Jeong; Lee, Sang Min; Kang, Moon Gi; Lee, Suk Jin; Lee, Young Kook

doi:10.1016/j.jallcom.2014.08.243

Cited by 94 publications

(46 citation statements)

References 39 publications

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“…6d). Park et al [6] also observed the presence of complex inclusions, such as MnS + AlN in high-Mn steels. Moreover, complex MnS + Al 2 O 3 particles were also identified.…”

Section: Pitting Behaviourmentioning

confidence: 94%

“…Therefore, the presence of various sulphide and oxide inclusions in these steels can be expected. Park et al [6] observed inclusions such as MnS, AlN, Al 2 O 3 , MnAl 2 O 4 and other complex inclusions in Mn-Al steels. Previous studies [7][8][9] demonstrated that non-metallic inclusions, especially sulfide inclusions affect the corrosion resistance of steel by providing pitting sites.…”

Section: Introductionmentioning

confidence: 99%

“…Experimental observations indicate in many cases that corrosion pits initiate at the inclusion/matrix boundaries. Moreover, the highest electrochemical reactivity of the inclusion/matrix in comparison to the steel matrix and the inclusion itself has been reported [6,7]. The shape, composition and distribution of inclusions have significant effects on the corrosion resistance, too.…”

Section: Introductionmentioning

confidence: 99%

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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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“…6d). Park et al [6] also observed the presence of complex inclusions, such as MnS + AlN in high-Mn steels. Moreover, complex MnS + Al 2 O 3 particles were also identified.…”

Section: Pitting Behaviourmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…Many researchers have studied the pitting processes, with most of them acknowledging that non-metallic inclusions induced pitting corrosion [9][10][11][12]. Schmuki et al [13] observed the inclusions in high sulfur stainless steel and found that the surroundings of the inclusions were preferentially dissolved and pitting corrosion occurred at the inclusions or their surroundings.…”

Section: Introductionmentioning

confidence: 99%

Pitting Corrosion of Steel Induced by Al2O3 Inclusions

Liu

Yang

Zhao

et al. 2017

Metals

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Abstract:To study the effect of Al 2 O 3 inclusions on pitting corrosion in steel, our researchers utilized industrial pure iron as the raw material with the addition of a proper amount of pure aluminum powder to form Al 2 O 3 inclusions. Corrosion experiments were performed by exposing the samples to a 6% FeCl 3 solution at room temperature (25 • C) for different lengths of time. Microscopic corrosion morphology was observed by scanning electron microscope (SEM), and the size change of the inclusions was quantitatively analyzed with Image Pro Plus. The experimental results showed that pitting corrosion arose preferentially around the Al 2 O 3 inclusions, and that pitting corrosion initiated at the junction of the Al 2 O 3 inclusions. The steel matrix dissolved and micro-cracks occurred as the Al 2 O 3 inclusions that were buried shallowly below the surface of the steel matrix promoted corrosion of the steel matrix. As corrosion progressed, the shallowly buried Al 2 O 3 inclusions began to appear on the surface, and the small, shallow inclusions fell off and formed micro pits. Furthermore, the clustered distribution of alumina inclusions had a greater effect on pitting initiation than the alumina inclusions distributed alone.

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“…It is well known that brittle oxides and ductile manganese sulphides affect the fatigue endurance limit, the fatigue-crack propagation rate, the fracture toughness, the anisotropy of the tensile properties with respect to the rolling direction and the weld quality, too. 13,14 Recently, A. Grajcar et al 12 analysed various types of non-metallic inclusions in laser-welded Fe-1.5Mn-0.9Si-0.4Al TRIP steel. Numerous oxide-type particles have been revealed in the fusion zone formed under air conditions.…”

Section: Introductionmentioning

confidence: 99%

Effect of gas atmosphere on the non-metallic inclusions in laser-welded trip steel with Al and Si additions

Grajcar¹,

Różański²,

Kamińska³

et al. 2016

Mater. Tehnol.

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The present study aims to characterize the weldability of a multiphase, automotive steel containing Al and Si additions from the point of view of its tendency to form non-metallic inclusions. Laser welding tests of 2-mm-thick sheets were performed using the keyhole-welding mode and a solid-state laser. The tests were carried out in air and with the use of an argon atmosphere. The distribution, type and chemical composition of the non-metallic inclusions formed in the base metal and fusion zones were analysed. The effect of applying the protective gas on the type and amount of non-metallic inclusions was determined using light and scanning electron microscopy. The chemical composition of the identified particles was assessed using the EDS method. It was found that a protective gas has a beneficial effect on reducing the non-metallic inclusions, but only to a limited extent. The boundary between the complex oxides and the pure aluminium oxides was determined to be 2-3 μm. Keywords: TRIP steel, laser welding, non-metallic inclusions, protective gas, Ar atmosphere, oxidation Namen te {tudije je opredeliti varivost s stali{~a tvorbe nekovinskih vklju~kov v ve~faznem jeklu, ki vsebuje Al in Si, za avtomobilsko industrijo. Izvedeni so bili varilni preizkusi z laserjem na 2 mm debelih plo~evinah z V zarezo. Preizkusi so bili izvedeni na zraku in v za{~itni atmosferi argona. Analizirana je bila razporeditev, vrsta in kemijska sestava nekovinskih vklju~kov v osnovnem materialu in v coni zlivanja. Vpliv uporabe za{~itnega plina na vrsto in koli~ino nekovinskih vklju~kov je bil dolo~en s pomo~jo svetlobne in vrsti~ne elektronske mikroskopije. Kemijska sestava najdenih delcev je bila ugotovljena z metodo EDS. Ugotovljeno je bilo, da ima za{~itni plin ugoden vpliv na zmanj{anje nekovinskih vklju~kov le v omejenem obsegu. Meja med kompleksnimi oksidi in~istimi oksidi aluminija je bila dolo~ena kot 2-3 μm.

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Pitting corrosion behavior in advanced high strength steels

Cited by 94 publications

References 39 publications

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

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

Pitting Corrosion of Steel Induced by Al2O3 Inclusions

Effect of gas atmosphere on the non-metallic inclusions in laser-welded trip steel with Al and Si additions

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