Evaluation of hydrogen damage in a fire tube using microstructure/mechanical properties studies

Bakhtiari, Reza; Zangeneh, Sh.

doi:10.1016/j.engfailanal.2018.03.030

Cited by 12 publications

(3 citation statements)

References 8 publications

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“…Boiler components are of great interest in power plants process industries because they are essential in transferring heat between two mediums (liquid or gas) [21][22][23]. A particular research interest is focused on boiler pipes as critical components that entail high maintenance costs due to failure when operating in aggressive conditions.…”

Section: Heat Exchangersmentioning

confidence: 99%

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The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

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Surface modification is essential to safeguard heat exchangers from premature failure spurred by deterioration mechanisms such as corrosion and wear, which diminish performance. Meanwhile, modifying some substrates with dissimilar materials is challenging due to a mismatch in material properties. Moreover, individual alloy coatings on substrates are usually insufficient in the required material properties, leading to accelerated failure of equipment, especially in power plant industries. This article summarised the knowledge base on functionally graded materials (FGMs) while emphasising how this promising class of novel materials can reduce deterioration. Additionally, laser cladding is established to be a suitable technique for processing FGMs. A particular focus is laid on the laser beam interaction with the FGM and expounding on the processing and material parameters that affect the microstructural properties of FGMs. The development prospects for processing FGMs with superior clad quality characteristics to increase boiler pipes' service life and performance are also highlighted.

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Section: Heat Exchangersmentioning

confidence: 99%

“…When hydrogen atoms enter a metal, they leave perforations in the microstructure that cause cracks to develop under applied stress during service. Additionally, manufacturing defects can allow for the entry of oxides that impair the microstructural integrity, such as the creation of porosity during fabrication [21,[25][26][27].…”

Section: Heat Exchangersmentioning

confidence: 99%

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

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“…Stress corrosion cracking (SCC) and hydrogen-induced cracking (HIC) are major issues in steel pipelines and are known as the most important failure mechanisms in such systems [6][7][8][9]. SCC occurs when the combination of tensile stress and corrosive media develops cracks in metals [5], and hydrogen embrittlement (HE) is explained by the result of the degradation of the mechanical properties of metals, which result in a decrease in ductility, strength, and fracture resistance due to the presence of hydrogen within the material [10].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Embrittlement of a Boiler Water Wall Tube in a District Heating System

Kim

Jain

et al. 2022

Metals

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A district heating system is an eco-friendly power generation facility with high energy efficiency. The boiler water wall tube used in the district heating system is exposed to extremely harsh conditions, and unexpected fractures often occur during operation. In this study, a corrosion failure analysis of the boiler water wall tube was performed to elucidate the failure mechanisms. The study revealed that overheating by flames was the cause of the failure of the boiler water wall tube. With an increase in temperature in a localized region the microstructure not only changed from ferrite/pearlite to martensite/bainite, which made it more susceptible to brittleness, but it also developed tensile residual stresses in the water-facing side by generating cavities or microcracks along the grain boundaries inside the tube. High-temperature hydrogen embrittlement combined with stress corrosion cracking initiated many microcracks inside the tube and created an intergranular fracture.

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Fitness-For-Service Assessment and Failure Analysis of Hydrogen-Induced Cracking in a Pipeline Steel

Zangeneh

2021

J Fail. Anal. and Preven.

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Evaluation of hydrogen damage in a fire tube using microstructure/mechanical properties studies

Cited by 12 publications

References 8 publications

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Hydrogen Embrittlement of a Boiler Water Wall Tube in a District Heating System

Fitness-For-Service Assessment and Failure Analysis of Hydrogen-Induced Cracking in a Pipeline Steel

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