Influence of long-term cold climate operation on structure, fatigue durability and impact toughness of 09Mn2Si pipe steel

Panin, S. V.; Власов, И. В.; Maruschak, Pavlo; Еремин, А. В.; Berto, Filippo; Syromyatnikova, A. S.; Vinogradov, Alexei

doi:10.1016/j.engfailanal.2019.04.036

Cited by 16 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low temperatures cause challenging conditions for the structural integrity of steel structures in Arctic regions [1]. In order to ensure safety of these structures against brittle failure, the structural design has to account for the static and dynamic structural responses that are often more severe than for other engineering structures [2][3][4][5][6]. In particular, the combination of high ice-related loads and low temperatures are difficult to account for in design [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Sallaba¹,

Rolof²,

Ehlers³

et al. 2022

Preprint

View full text Add to dashboard Cite

The formation and propagation of cracks occurs through irreversible dislocation movements at notches, material defects and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT.

show abstract

Section: Introductionmentioning

confidence: 99%

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Sallaba¹,

Rolof²,

Ehlers³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Low temperatures cause challenging conditions for the structural integrity of steel structures in Arctic regions [1]. In order to ensure the safety of these structures against brittle failure, the structural design has to account for the static and dynamic structural responses that are often more severe than for other engineering structures [2][3][4][5][6]. In particular, the combination of high ice-related loads and low temperatures is difficult to account for in design [7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Sallaba

Rolof

Ehlers

et al. 2022

Metals

View full text Add to dashboard Cite

The formation and propagation of cracks occur through irreversible dislocation movements at notches, material defects, and grain boundaries. Since this process is partly thermally controlled, the resistance to dislocation movements at low temperatures increases. This slows both fatigue initiation and fatigue crack propagation. From recent experimental data, it can be seen that fatigue crack growth is accelerated below the fatigue transition temperature (FTT) that correlates with the ductile-brittle transition temperature (DBTT) found by well-known fracture mechanics tests, i.e., Charpy impact, fracture toughness, and CTOD. Hence, this study investigates the relation between FTT and DBTT in S500 high-strength steel base material and welded joints at low temperatures using fatigue crack growth, fracture toughness tests as well as scanning electron microscopy. From the tests, an almost constant decrease in fatigue crack propagation rate is determined with decreasing test temperature even below the DBTT. At −100 °C, the fatigue crack propagation rate is about half of the rate observed at room temperature for both base material and weld metal.

show abstract

“…The microstructural degradation, revealed through hardness measurements, exerts only slight effects under static tension. It was reported that values of the basic mechanical properties of the steel have not changed when compared with the emergency reserve values (Panin et al, 2017(Panin et al, , 2019. Several studies have investigated the effect of the addition of Zr and Al as deoxidizers on the size, distribution, and composition of inclusions (Rodionova et al, 2005a,b;Li et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

Sun

2021

Front. Mater.

View full text Add to dashboard Cite

Polar steel requires excellent toughness and corrosion resistance for breaking icy surfaces in low-temperature seawater environments. In this study, the effect of inclusions on the corrosion resistance of polar steel was examined. In the experiments conducted, the composition and morphology of the inclusions in steel were controlled using different deoxidation methods during steel refining. The morphology and composition of the corrosion-resistant active inclusions were analyzed using scanning electron microscopy and energy dispersive spectroscopy. The corrosion resistance of polar steel was determined by measuring the saturation current density of the anodic dissolution of steel in a corrosive medium via an electrochemical method. The corrosion resistance under simulated seawater was also investigated under laboratory conditions. It was found that as the ratio of Al/Mg approaches the stoichiometric composition of the spinel (2.3–2.5), the inclusions become less active; as the ratio increases further, the corrosion-resistant activity increases due to the formation of MgAl2O4⋅CaO complexes, leading to an increase in local stress around the inclusions. If steel is deoxidized with Zr–Ti, small Zr–Ti complex oxides form in the steel, providing nucleation particles for the precipitation of spheroidized and uniformly distributed MnS. Therefore, steel deoxidized with Zr–Ti has better seawater corrosion resistance than Al-deoxidized steel.

show abstract

Influence of long-term cold climate operation on structure, fatigue durability and impact toughness of 09Mn2Si pipe steel

Cited by 16 publications

References 27 publications

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Relation between the Fatigue and Fracture Ductile-Brittle Transition in S500 Welded Steel Joints

Influence of Non-metallic Inclusions on Corrosive Properties of Polar Steel

Contact Info

Product

Resources

About