Thermodynamic analysis of the brittleness of austenitic stainless steels

Bogolyubskii, S. D.; Sorokina, N. A.; Tomilin, I.A.; Ul'yanin, E. A.

doi:10.1007/bf00651897

Cited by 3 publications

(2 citation statements)

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“…In nitric acid environments austenitic stainless steels have been used only in low concentrated media due to the breakdown of the corrosion resistance which can take place at highly concentrated media. Several works [1][2][3][4][5][6] have previously shown that silicon addition in 18Cr-15Ni matrix has a pronounced beneficial effect on different types of corrosion resistance: intergranular corrosion resistance, stress corrosion resistance and having a good transpassive behavior. The aim of present paper is to put in evidence the influence of silicon alloying on different type of corrosion behavior of the austenitic stainless steels.…”

Section: Introductionmentioning

confidence: 99%

Silicon Influence on Corrosion Properties of Austenitic Stainless Steels

Ghiban

2007

AMR

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In the present paper there are presented results concerning comparative corrosion resistance of some austenitic stainless steels, with or without silicon content. The silicon content is varying in the range of 1-5 %, in a matrix of alloyed austenite, containing 20% Cr and 15-18%Ni and with very low carbon contents (lower than 0,03% C). There are investigated different types of corrosion resistance: intergranular corrosion in nitrogen media, stress corrosion resistance in chloride media, and transpassive behaviour in sulphuric media. The testing media contained nitrogen, as it follows: Huey test (65% HNO3, at boiling temperature, 244 hours maintain), and 5N HNO3 +1g/l Cr6+ (144 h, at boiling temperature). The media containing chloride is 45% MgCl2 at boiling temperature, with a period of 1000 hours. The transpassive behaviour is tested in 10% HSO4. The investigations were made by optic and electronic microscope, and the corroded surfaces were examined by scanning electron microscopy.

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Section: Introductionmentioning

confidence: 99%

Silicon Influence on Corrosion Properties of Austenitic Stainless Steels

Ghiban

2007

AMR

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“…In contrast to nickel, manganese increases the solubility of carbon in austenite, which diminishes the formation of carbide phases in the temperature range 500 -800~ [4]. Table 1 presents calculated solubilities of carbon in steels with 13% Cr and various manganese contents.…”

Section: Introductionmentioning

confidence: 99%