Passivation and stress corrosion cracking tendency of manganese stainless steels

Devasenapathi, A.; Prasad, Rajesh; Raja, V.S.

doi:10.1007/bf00352660

Cited by 5 publications

(5 citation statements)

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“…In previous studies, reports were made that these alloys can undergo intergranular mode of fracture when Ni is substituted with Mn partly or completely. [1][2] This change in mode of failure was noticed in spite of the fact that these alloys were in a solutionized condition. Furthermore, they were even found to exhibit better intergranular corrosion (IGC) resistance as compared to that of type 304 (UNS S30400) (1) stainless steel even on heat treatment in the sensitization temperature range.…”

Section: Introductionmentioning

confidence: 80%

“…The films formed in hydrochloric acid (HCl) were analyzed since earlier SCC studies were carried out in this solution, which provides an active condition. 2,4,8 While literature on the passive films formed on high Mn-containing stainless steels is sparse, passive films formed on ferritic (Fe-Cr) and austenitic (Fe-Cr-Ni) stainless steels have been investigated widely. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] The rich Cr content of the passive films formed on these stainless steels in HCl, [9][10][11] sulfuric acid (H 2 SO 4 ), [12][13][14][15] and other neutral environments [16][17][18] was the primary reason for the excellent resistance exhibited by these alloys.…”

Section: Introductionmentioning

confidence: 99%

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Electron Spectroscopy for Chemical Analysis Study of Corrosion Films Formed on Manganese Stainless Steels

et al. 1999

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Films formed on two grades of Mn stainless steels in 1 M hydrochloric acid (HCl) freely exposed to air at different potentials were examined using electron spectroscopy for chemical analysis (ESCA). The Cr content of the film, which is related closely to corrosion resistance of the base alloys, was lower within the films formed on Mn stainless steels as compared to a normal type 304 (UNS S30400) stainless steels. The film also contained significant amounts of Mn, Ni, and Cu. It was proposed that the presence of higher amounts of Mn, an electrochemically active element, with Cu resulted in poor passivation behavior of the present high Mn stainless steels.

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Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Electron Spectroscopy for Chemical Analysis Study of Corrosion Films Formed on Manganese Stainless Steels

et al. 1999

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“…Further they reported that Ni (0.87 wt.%) and Mn (9.25 wt.%) exhibited the highest EAC resistance in boiling 42 wt.% MgCI 2 solution at 152°C [16].…”

Section: Nickel Free Austenitic Stainless Steelsmentioning

confidence: 98%

“…Devasenapathi and Raja [14][15][16][17] studied the corrosion behavior of three different grades of Mn stainless steels having different Ni contents and compared with that of type 304 SS. Such steels can also be considered as a variation of 200 series stainless steels.…”

Section: Nickel Free Austenitic Stainless Steelsmentioning

confidence: 99%

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Environmentally-Assisted Cracking of Engineering Materials - An Insight

Kannan¹,

Raja²

2009

Corrosion Reviews

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This paper reviews the environmentally-assisted cracking studies of some of the key engineering materials i.e. austenitic stainless steels, aluminium alloys and magnesium alloys. Some of the salient work carried out by the research laboratories and institutions in India and other countries, in this critical research area, are brought out in this paper. Environmentally-AssistedCracking of Engineering Materials known as EAC. Stresses arise in practice from applied load or from residual stress due to welding or inhomogeneous plastic deformation.The literature on EAC of engineering materials is vast, and there are many useful textbooks and conference proceedings [1][2][3][4][5]. Understanding the EAC mechanism(s) in metals has been a subject of interest for decades.Basically, the EAC can be broadly classified into two groups: (i) anodic dissolution assisted cracking and (ii) hydrogen-induced cracking. Many models have been put forward, in literature, to explain the EAC mechanism(s). The slip-dissolution model is one of them explaining the crack growth occurring by extremely localized dissolution of the metal. This model states that the crack is protected by a film, usually an oxide, which is fractured as a result of plastic strain in the metal at the crack tip. The crack growth proceeds by a cyclic process of film-rupture, dissolution and filmrepair. This model has been mainly cited to explain the intergranular cracking of femtic steels in passivating environments such as carbonate-bicarbonate solutions as well as sensitised stainless steels in a variety of environments.Later, a film-induced cleavage model was proposed to explain the brittle failure of alpha-brass due to dezincification in ammonia solution. Hydrogeninduced cracking or hydrogen embrittlement in metallic materials is also widely accepted as a mechanism of failure in recent years. Hydrogen discharge and absorption are favoured when there is acidification of the local environment by cation hydrolysis, especially if this acidification damages or destroys a passive film in the crack. Once hydrogen is absorbed in the metal, it can promote cleavage, intergranular separation, or a highly localized plastic fracture. In hydride-forming metals such as Mg and Ti, formation of brittle hydrides can be part of the fracture mechanism.The research organisations and institutions in India have contributed significantly to the understanding of EAC behaviour of engineering materials. Some of the key research works carried out in this research area by

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Effect of austenitisation temperature on corrosion resistance properties of dual-phase high-carbon steel

2019

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Passivation and stress corrosion cracking tendency of manganese stainless steels

Cited by 5 publications

References 16 publications

Electron Spectroscopy for Chemical Analysis Study of Corrosion Films Formed on Manganese Stainless Steels

Electron Spectroscopy for Chemical Analysis Study of Corrosion Films Formed on Manganese Stainless Steels

Environmentally-Assisted Cracking of Engineering Materials - An Insight

Effect of austenitisation temperature on corrosion resistance properties of dual-phase high-carbon steel

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