Effect of pH and H2S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel-Reference-Cited by-同舟云学术

Effect of pH and H2S concentration on sulfide stress corrosion cracking (SSCC) of API 2205 duplex stainless steel

Published:2015-06-01 Issue:6 Volume:106 Page:608-613
ISSN:2195-8556
Container-title:International Journal of Materials Research
language:en
Short-container-title:

Author:

Liu Ranke¹²,Li Jiankuan¹²,Liu Zhiyong¹²,Du Cuiwei¹²,Dong Chaofang¹²,Li Xiaogang¹²

Affiliation:

1. Corrosion and Protection Center, University of Science and Technology Beijing , Beijing , P. R. China

2. Key Laboratory of Chinese Ministry of Education for Corrosion and Prevention , Beijing , P. R. China

Abstract

Abstract The role of pH value and H2S concentration on the sulfide stress corrosion cracking of API 2205 duplex stainless steel was studied by means of slow strain-rate tests, polarization curve measurements and surface analysis. It was found that 2205 duplex stainless steel was highly susceptible to sulfide stress corrosion cracking as pH decreased and H2S concentration increased. When the pH value was 2.8, the susceptibility stayed at a low level in 500 ppm H2S concentration but there existed a critical H2S concentration between 500 ppm and 1 000 ppm, above which the susceptibility rapidly increased. The sulfide stress corrosion cracking resulted from hydrogen-induced cracking and exhibited the characteristics of hydrogen embrittlement. The boundary of a phase and γ phase promoted the initiation of stress corrosion cracking, while γ phase inhibited its propagation.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Link

https://www.degruyter.com/document/doi/10.3139/146.111220/pdf

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