Study on SCC Behavior of Austenitic Stainless Steels in H2S Saturated Aqueous Solutions Containing Cl-

J Chin Soc Corr Pro

2000, Vol. 20

Issue (1): 47-53 DOI:

Research Report

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Study on SCC Behavior of Austenitic Stainless Steels in H2S Saturated Aqueous Solutions Containing Cl-

Rongguang Wang;;;

上海材料研究所

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Abstract Stress corrosion cracking(SCC) sensibility of austentic stainless steels SUS 316L in H2Ssaturated aqueous solution containing Cl- or CO32- was investigated by U bend samples. Addition of Cl- and reduction of solution pH intensified the SCC susceptibility of these two steels. But it was decreased obviously when adding 0.001mol/L Na2CO3 into the aq ueous solution especially for SUS316. Intergranular corrosion sensibility of SUS 316 was increased after sensitization heat treatment, and its SCC resistance got worse. However, SUS 316L exhibited remarkable immunity to sensitization. The SCC cracking morphology and the mechanism were also discussed.

Key words: austenitic stainless steel stress corrosion cracking

Received: 22 March 1999

ZTFLH:

TG172.9

Corresponding Authors: Rongguang Wang

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Rongguang Wang. Study on SCC Behavior of Austenitic Stainless Steels in H2S Saturated Aqueous Solutions Containing Cl-. J Chin Soc Corr Pro, 2000, 20(1): 47-53 .

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https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2000/V20/I1/47

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