Hydrogen-Induced Cracking in Pipeline Steels
A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Failure Analysis".
Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 7818
Special Issue Editors
Interests: hydrogen induced cracking (HIC) in pipeline steels; Fracture and Failure Analysis; Materials Characterization; Corrosion; Mechanical Properties
Special Issues, Collections and Topics in MDPI journals
Interests: crystallographic orientation; physical metallurgy; hydrogen embrittlement; phase transformation; mechanical and wear properties
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Pipeline steels have become the main network of oil and gas transmission over the last several decades. They provide an easy and economical way to transport oil and natural gas over long distances. For example, the total length of pipeline steels has increased from about 30,000 km to over 120,000 km between 1975 and 2004 in Europe. The fact that they are located in harsh environments and that they carry corrosive materials are two important issues in pipeline steels. However, these problems may decrease the life expectancy of pipelines. Pipeline steels are exposed to two different failure modes, hydrogen induced cracking (HIC) and stress corrosion cracking (SCC). Hydrogen sulfide (H2S), which is present in oil and natural gas, may react with the metal matrix and produce hydrogen ions (H+). Such ions have a very small size and can easily diffuse through the microstructure of steel and accumulate in different microstructural defects such as grain boundaries, the space between inclusions and precipitates and the metal matrix. The combination of hydrogen ions creates hydrogen molecules or gas providing pressure high enough to initiate crack. This type of cracks is called hydrogen-induced cracking (HIC). Such cracks propagate though easy paths such as hard phases and grain boundaries. HIC cracks may not only cause a large amount of economical loss annually, but they may also pollute the agricultural farms and places where they are located.
The aim of this Special Issue is to collect manuscripts, including research articles, reviews, communications and concept papers, pertaining to a topic relevant to HIC in pipeline steels.
Prof. Dr. M. A. Mohtadi Bonab
Prof. Dr. Mohammad Masoumi
Guest Editors
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Keywords
- Hydrogen-induced cracking
- Pipeline steels
- Hydrogen sulfide
- Crack propagation
- Stepwise cracking
- Microstructure
- Inclusion
- Grain boundary Crystallographic texture
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