Stress Corrosion Characteristics of Copper-Containing 18Cr-8Ni Stainless Steel in Sulfuric Acid Solution

Asawa, Mitsuo

doi:10.5006/1.3585041

Cited by 6 publications

(3 citation statements)

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“…It has been found that susceptibility to SCC of Cu-Ni-Si alloy in NH 3 atmosphere depends on aging time and on the extent of plastic deformation preceding or following aging, marked improvement in resistance being caused by prior cold working and to a lesser extent by deformation subsequent to aging. The beneficial effect of plastic deformation is attributed to the increase in the number of sites for preferential corrosion and consequently decreasing the rate of penetration [119,120].…”

Section: C2 Effects Of Alloy Compositionmentioning

confidence: 99%

Copper and Copper Alloys

Sequeira

2011

Uhlig's Corrosion Handbook

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Section: C2 Effects Of Alloy Compositionmentioning

confidence: 99%

Copper and Copper Alloys

Sequeira

2011

Uhlig's Corrosion Handbook

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“…In this paper, the initiation mechanism of the SCC of Cu-containing 18Cr-8Ni SS in hot, pure H 2SO4 solution, which had been observed in another work of the author, 13 The unit consisted of a small vertical electric furnace and a glass tube container (16 mm in diameter and 60 mm in length) that had a rubber plug at the bottom and a condenser at the upper end. Water used for test solutions was purified by an ion exchanger and its resistivity was greater than 50 kl} cm.…”

Section: Introductionmentioning

confidence: 96%

Mechanism of Stress Corrosion Crack Initiation of Cu-Containing 18Cr-8Ni Stainless Steel in Sulfuric Acid Solution

Asawa¹

1990

CORROSION

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Crack initiation mechanism of 18Cr-8Ni stainless steel containing Cu in H2SO4 solution was studied in terms of activation energy for the initiation. The initiation was detected by photo-microscopical observation of specimen surface tested in the temperature range 50 to 90°C at stresses from 75 to 300 MPa. The apparent activation energy was either about 17 or 86 kJ/mol depending on the stress level and the temperature. The discussion lead to the conclusion that the initiation stage is a series of a mechanical slip process of the crystal planes and a dissolution process of resultant emergent steps.KEY WORDS: activation energy, initiation mechanism, stainless steel, stress corrosion cracking, sulfuric acid solution boundaries (A); (4) corrosion grooves parallel to wire axis (m);

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“…Earlier studies on Cu additions in the Cr-Ni-Mo austenitic stainless steels [3][4][5] and the type 304 stainless steels [6][7][8] indicate the susceptibility of both the alloys to SCC in hot H 2 SO 4 environments without chlorides at open circuit potential (OCP) and potentials close to it. The surface corrosion product formed during testing showed the presence of Cu [3,7], which was suggested to be protective against general corrosion and also a prerequisite for the SCC initiation and/or propagation.…”

Section: Introductionmentioning

confidence: 99%