Comparison of rolled and heat treated SS304 in chloride solution using electrochemical and XPS techniques

Phadnis, S. V.; Satpati, Ashis Kumar; Muthe, K.P.; Vyas, J.C.; Sundaresan, R.

doi:10.1016/s0010-938x(03)00099-4

Cited by 116 publications

(58 citation statements)

References 22 publications

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“…The former is, most likely, responsible for the differences in the corrosion resistance among the EP films, since the Cr/Fe ratio in the three EP-formed films is similar. Several investigations also concluded that the thickness of passive film is a property that is directly related to the resulting general corrosion resistance [70,77,78].…”

Section: General Corrosion Resistancementioning

confidence: 99%

Electrochemical polishing as a 316L stainless steel surface treatment method: Towards the improvement of biocompatibility

et al. 2014

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Section: General Corrosion Resistancementioning

confidence: 99%

Electrochemical polishing as a 316L stainless steel surface treatment method: Towards the improvement of biocompatibility

et al. 2014

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“…Texture plays an important role in enhancing Cr diffusion in Fe-Cr alloys. [55] Moreover, a recent [56] study showed that the passive film formed on highly deformed (~66 pct) 304L SS contains a higher Cr/Fe ratio than that in the film on an annealed material. This was attributed to higher pitting potential for the deformed material.…”

Section: H Effect Of Microstructural Changes In 01 N Nacl Solutionmentioning

confidence: 99%

Influence of Cold-Worked Structure on Electrochemical Properties of Austenitic Stainless Steels

Kumar

Mahato

Singh

2007

Metall Mater Trans A

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The effect of cold working on microstructure and structure and thereby on electrochemical behavior of metastable AISI 304L and stable AISI 316L austenitic stainless steels in two different solutions is presented here. The solution-annealed stainless steel (SS) plates were unidirectionally cold rolled at different rolling conditions (with or without interpass cooling and subzero temperature) up to 90 pct reduction in thickness. The X-ray diffraction (XRD) technique was employed to study textures and residual stress development in the stainless steels due to cold working and to quantify the volume fraction of a¢-martensite phase formed in the metastable SS. Cold working introduced residual stress and developed texture in both stainless steels. The residual stress and volume fraction of strain-induced a¢-martensite phase in 304L SS was varied with the rolling conditions. The study has shown that the type of textures developed in the two stainless steels influenced their electrochemical properties.

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“…Other reports focused on the modification of thickness and composition of passive films in many ways by cold work. 18 In addition, transfer resistance did not appear to change linearly as a function of cold reduction. 19 However, the metallurgical changes produced by cold work have not clearly been related to the composition and structural evolution of passive films, which have direct influence on the corrosion resistance.…”

mentioning

confidence: 91%

Influence of Cold Work on Pitting Corrosion Behavior of a High Nitrogen Stainless Steel

Han

et al. 2008

J. Electrochem. Soc.

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The effects of cold work on the pitting corrosion resistance of a nickel-free high-nitrogen stainless steel in chloride solution have been investigated by electrochemical tests, surface chemical analysis, immersion tests, and microscopic observations. Potentiodynamic polarization revealed that pitting resistance was degraded by cold work as convinced by the decreased critical pitting potential. This could be due to a less compact and protective anodic passive film based on the results of electrochemical impedance spectroscopy, Mott-Schottky measurement, and X-ray photoelectron spectroscopy analysis. The growth of such an imperfect passive film could be attributed to a high density of deformation bands and other defects introduced by cold work. Scanning electron microscopy observation of the pitted specimens after polarization tests showed no obvious change in size and density of corrosion pits with increasing cold work level, whereas immersion tests showed varied pit density with cold work although the average size of pits did not increase linearly as a function of cold work level. The effects of cold work on the characteristics of passive films are discussed.The beneficial effects of nitrogen on the properties of highalloyed steels have led to a widespread development of highnitrogen stainless steels ͑HNSSs͒ owing to recent advances in processing technologies. 1-3 Nitrogen as an alloying element causes several beneficial effects on the properties of steels, in particular, those related to an excellent combination of high yield strength and good fracture toughness. 1 Nitrogen is also a strong austenitestabilizing element and is expected to substitute for nickel, which is expensive and causes an allergic reaction in human skin. Moreover, nitrogen alloying, especially together with molybdenum, improves resistance to localized corrosion, in general, and resistance to general corrosion in some environments. Therefore, the austenitic HNSSs constitute a group of promising structural materials that possess a favorable combination of mechanical and corrosion-resistance properties.With these increasing demands, it is necessary to investigate the pitting resistance of the HNSSs. Thus far, a number of possible mechanisms by which nitrogen improves the localized corrosion resistance have been reported. 4-7 Cold work is unavoidable for the fabrication of stainless steel ͑SS͒ components. It might affect the pitting corrosion resistance of SSs because deformation substructures, such as planar dislocation arrays 1,8 and deformation twinning, 9 could be introduced. Several investigations have reported the role of cold work on the localized corrosion resistance of SSs. 10-17 Kamachi Mudali et al. 10 have reported that the pitting corrosion resistance of a nitrogen-bearing 316 SS was improved first by cold work in neutral chloride medium and then reduced beyond 20% cold work. Peguet et al. 11 have reported the different role of cold work on the pitting corrosion resistance at different pitting stages, including pit initiation, prop...

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Comparison of rolled and heat treated SS304 in chloride solution using electrochemical and XPS techniques

Cited by 116 publications

References 22 publications

Electrochemical polishing as a 316L stainless steel surface treatment method: Towards the improvement of biocompatibility

Electrochemical polishing as a 316L stainless steel surface treatment method: Towards the improvement of biocompatibility

Influence of Cold-Worked Structure on Electrochemical Properties of Austenitic Stainless Steels

Influence of Cold Work on Pitting Corrosion Behavior of a High Nitrogen Stainless Steel

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