Effects of Mn and Microalloying Composition on Corrosion and Hydrogen-Induced Cracking of API 5L X65 Steels-Reference-Cited by-同舟云学术

Effects of Mn and Microalloying Composition on Corrosion and Hydrogen-Induced Cracking of API 5L X65 Steels

Published:2022-06-12 Issue:8 Volume:78 Page:765-777
ISSN:0010-9312
Container-title:Corrosion
language:en
Short-container-title:

Author:

Quispe-Avilés Janeth Marlene¹,Fiori Marco Aurélio Pereira¹,Hincapie-Ladino Duberney²,Ramirez Oscar Mauricio Prada¹,de Melo Hercílio Gomes¹

Affiliation:

1. *Departamento de Engenharia Metalúrgica e de Materiais, Universidade de São Paulo—USP, São Paulo-SP, Brazil 05508-030.

2. **Facultad de Ingeniería Mecánica, Fundación Universidad de América—FUA, Bogotá, Colombia 111711.

Abstract

The corrosion and hydrogen-induced cracking (HIC) resistance as well as hydrogen permeation behavior of two API 5L X65 steels with different amounts of Mn and microalloying elements were compared. The corrosion behavior of both steels, evaluated using electrochemical impedance spectroscopy and polarization curves in solution A of NACE TM0284-16 standard with and without H2S saturation (sour medium), showed no relevant differences in each medium, which can be ascribed to their similar microstructures; however, the corrosion resistance of both steels was lower in the sour medium. The investigation of resistance to hydrogen-induced failures disclosed better performance for the low Mn steel. This was confirmed using a harsher HIC test performed in an HCl acidified sour medium and was ascribed to the presence of Nb carbides nanoprecipitates, as revealed by the scanning transmission electron microsccopy analysis.

Publisher

Association for Materials Protection and Performance (AMPP)

Subject

General Materials Science,General Chemical Engineering,General Chemistry

Link

https://meridian.allenpress.com/corrosion/article-pdf/78/8/765/3092037/3876.pdf

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