The Critical Temperature for The SCC of 304SS Weldments in Solutions of NaCl

Fang Zhi; Cao Bei; Wu Yinshun; Zhu Rizhang

doi:10.13374/j.issn1001-053x.1994.s1.003

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Fang Zhi, Cao Bei, Wu Yinshun, Zhu Rizhang. The Critical Temperature for The SCC of 304SS Weldments in Solutions of NaCl[J]. Chinese Journal of Engineering, 1994, 16(S1): 12-16. doi: 10.13374/j.issn1001-053x.1994.s1.003

Citation:

Fang Zhi, Cao Bei, Wu Yinshun, Zhu Rizhang. The Critical Temperature for The SCC of 304SS Weldments in Solutions of NaCl[J]. Chinese Journal of Engineering, 1994, 16(S1): 12-16. doi: 10.13374/j.issn1001-053x.1994.s1.003

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The Critical Temperature for The SCC of 304SS Weldments in Solutions of NaCl

doi: 10.13374/j.issn1001-053x.1994.s1.003

Dept. of Surface Science and Corrosion Engineering

Received Date: 1993-10-08
Available Online: 2021-11-13

Abstract

Abstract

The stress corrosion cracking of 304SS weldments in NaCl solutions has been shudied by SSRT technique.It was found that there exists a critical temperature for the SCC in this system.The cirtical temperature decreases with the increase of NaCl concentration when the concentration of NaCl is lower than 1.0mol/L, but it doesn't change much in a wide range of NaCl concentration when the concentration of NaCl is higher than 1.0mol/L.The diagram of T(℃)-[Cl^-]-SCC has been given.For the weldment,SCC occurs in weld fusion zone and propagates along δ-ferrite phase between austenite dendrites.
- weld,
- stess corrosion cracking,
- chloride,
- critical temperature