This paper presents the corrosion test results of 9%Ni steels (ASTM A522 type 1 and ASTM A333 grade 8) in presence of aqueous solutions containing H2S and CO2. A forged bar and a seamless pipe, manufactured to be used in high-pressure CO2 lines, were tested by NACE TM0177, TM0284, and ISO 7539-2. Localized corrosion and cracks were observed in the sulfide stress cracking (SSC) tests, in both base materials, and welded joint. These types of attack were associated to specific metallurgical features of the products (forged bar and seamless pipe), indicating that a better evaluation of the corrosion resistance of these materials is necessary. No hydrogen induced cracking damage was detected after the standard testing time, but microcracks were identified, reducing the impact energy levels. The welded joint presented high susceptibility to SSC cracking.
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1 March 2017
Research Article|
November 23 2016
Behavior of 9Ni Steel in the Presence of Aqueous Solutions Containing CO2 and H2S Available to Purchase
Guilherme Zeemann Pinho Emygdio;
Guilherme Zeemann Pinho Emygdio
*Laboratório de Ensaios Não Destrutivos, Corrosão e Soldagem—LNDC, COPPE Universidade Federal do Rio de Janeiro—UFRJ, Cx. Postal 68505, CEP 21945-970, Rio de Janeiro, RJ, Brazil.
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Kioshy Santos de Assis;
Kioshy Santos de Assis
*Laboratório de Ensaios Não Destrutivos, Corrosão e Soldagem—LNDC, COPPE Universidade Federal do Rio de Janeiro—UFRJ, Cx. Postal 68505, CEP 21945-970, Rio de Janeiro, RJ, Brazil.
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Annelise Zeemann;
Annelise Zeemann
**TECMETAL, Soluções Tecnológicas em Materiais—Estrada dos Bandeirantes, 28.000—Vargem Grande Rio de Janeiro—RJ—CEP 22785-092, Brazil.
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Oscar Rosa Mattos
Oscar Rosa Mattos
‡
*Laboratório de Ensaios Não Destrutivos, Corrosão e Soldagem—LNDC, COPPE Universidade Federal do Rio de Janeiro—UFRJ, Cx. Postal 68505, CEP 21945-970, Rio de Janeiro, RJ, Brazil.
‡Corresponding author. E-mail: [email protected].
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‡Corresponding author. E-mail: [email protected].
Received:
July 23 2016
Revision Received:
November 23 2016
Accepted:
November 23 2016
Online ISSN: 1938-159X
Print ISSN: 0010-9312
© 2017, NACE International
2017
CORROSION (2017) 73 (3): 303–314.
Article history
Received:
July 23 2016
Revision Received:
November 23 2016
Accepted:
November 23 2016
Citation
Guilherme Zeemann Pinho Emygdio, Kioshy Santos de Assis, Annelise Zeemann, Oscar Rosa Mattos; Behavior of 9Ni Steel in the Presence of Aqueous Solutions Containing CO2 and H2S. CORROSION 1 March 2017; 73 (3): 303–314. https://doi.org/10.5006/2198
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