Experimental Investigation of Fatigue Crack Growth Behavior of the 2.25Cr1Mo0.25V Steel Welded Joint Used in Hydrogenation Reactors Article Swipe
Yan Song
,
Mengyu Chai
,
Zelin Han
·
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/ma14051159
YOU?
·
· 2021
· Open Access
·
· DOI: https://doi.org/10.3390/ma14051159
In this work, the fatigue crack growth (FCG) behavior and fatigue damage mechanism of the 2.25Cr1Mo0.25V steel welded joint used in hydrogenation reactors were investigated. The multi-pass welding was carried out to manufacture the welded joint using the combined shielded metal arc welding (SMAW) and submerged automatic arc welding (SAAW) processes. The FCG behavior of different zones in the welded joint, including the base metal (BM), the heat-affected zone (HAZ) and the weld metal (WM), were studied by compact tension tests. Moreover, the acoustic emission (AE) technique was used to monitor AE signals generated from FCG process for further understanding FCG behavior and fatigue mechanisms. Additionally, the microstructures and fracture surfaces of different specimens were observed by optical microscopy (OM) and scanning electron microscopy (SEM). The results revealed that the microstructure of BM is fine granular bainite, while the WM shows coarser bainite grains. The HAZ exhibits the most significant inhomogeneity with large dispersion of grain size. FCG results showed that the HAZ exhibits much higher fatigue crack growth rate (FCGR) at low ΔK values, while the BM shows the most superior fatigue resistance. The AE technique is successful in monitoring and identifying damage evolutions during the FCG process. Moreover, an enhanced AE activity is observed in FCG of the WM specimen, which is attributed to the combined influence of the formation of numerous secondary cracks and coarse-grained microstructures.
Related Topics
Concepts
Materials science
Welding
Paris' law
Microstructure
Joint (building)
Base metal
Bainite
Metallurgy
Composite material
Scanning electron microscope
Shielded metal arc welding
Optical microscope
Heat-affected zone
Fracture mechanics
Crack closure
Structural engineering
Gas metal arc welding
Martensite
Engineering
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/ma14051159
- https://www.mdpi.com/1996-1944/14/5/1159/pdf?version=1614671586
- OA Status
- gold
- Cited By
- 12
- References
- 44
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3134922709
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W3134922709Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3390/ma14051159Digital Object Identifier
- Title
-
Experimental Investigation of Fatigue Crack Growth Behavior of the 2.25Cr1Mo0.25V Steel Welded Joint Used in Hydrogenation ReactorsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2021Year of publication
- Publication date
-
2021-03-01Full publication date if available
- Authors
-
Yan Song, Mengyu Chai, Zelin HanList of authors in order
- Landing page
-
https://doi.org/10.3390/ma14051159Publisher landing page
- PDF URL
-
https://www.mdpi.com/1996-1944/14/5/1159/pdf?version=1614671586Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/1996-1944/14/5/1159/pdf?version=1614671586Direct OA link when available
- Concepts
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Materials science, Welding, Paris' law, Microstructure, Joint (building), Base metal, Bainite, Metallurgy, Composite material, Scanning electron microscope, Shielded metal arc welding, Optical microscope, Heat-affected zone, Fracture mechanics, Crack closure, Structural engineering, Gas metal arc welding, Martensite, EngineeringTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
12Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 5, 2024: 3, 2022: 2, 2021: 2Per-year citation counts (last 5 years)
- References (count)
-
44Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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