Corrosion Resistance of Dissimilar GTA Welds of Pipeline Steel and Super Duplex Stainless Steels in Synthetic Brine-Reference-Cited by-同舟云学术

Corrosion Resistance of Dissimilar GTA Welds of Pipeline Steel and Super Duplex Stainless Steels in Synthetic Brine

Published:2021-03-23 Issue:6 Volume:77 Page:668-680
ISSN:0010-9312
Container-title:Corrosion
language:en
Short-container-title:

Author:

Vargas V.H.¹,Albiter A.²,Domínguez-Aguilar M.A.²,Altamirano G.³,Maldonado C.¹

Affiliation:

1. Universidad Michoacana de San Nicolás de Hidalgo, Instituto de Investigaciones Metalúrgicas y Materiales, Av. Fco. J. Múgica S/N. Edif. U. Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México.

2. Instituto Mexicano del Petróleo, Eje Lázaro Cárdenas Norte 152, Col. San Bartolo Atepehuacan, C.P. 07730, Ciudad de México, México.

3. Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Saltillo, Industria Metalúrgica 1062, Parque Industrial Saltillo-Ramos Arizpe, C.P. 25900, Ramos Arizpe, Coahuila, México.

Abstract

The effect of weld passes and single V grove designs on the corrosion resistance of dissimilar welds of a low alloy steel and a super duplex stainless steel was studied in synthetic brine. Welds were manufactured in argon by the gas tungsten arc technique and joined by a high nickel wire of super duplex stainless steel. Samples of weld regions were characterized by composition scans, electrochemical measurements, microhardness, and scanning electron microscopy. In X52/ER2594, a transition region of grain boundaries type II and a band of martensite were formed. The base metal of X52 underwent the highest corrosion rate and localized corrosion occurred in the heat affected zone. Interface ER2594/25Cr7Ni and 25Cr7Ni showed the presence of pitting near intermetallics.

Publisher

NACE International

Subject

General Materials Science,General Chemical Engineering,General Chemistry

Link

http://meridian.allenpress.com/corrosion/article-pdf/77/6/668/2843396/3746.pdf

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