Influence of microalloying with boron on the structure and properties of high-strength oil pipe

Ovchinnikov, Dmitry; Sofrygina, O. A.; Zhukova, S. Yu.; Pyshmintsev, I. Yu.; Bityukov, S. M.

doi:10.3103/s0967091211040188

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…[29] FeB alloys are widely used for steelmaking, not only for high-strength and wear-resistant steels but also in the production of relatively new pipe steels of high strengths and martensitic steels to be used in the automotive industry. [30][31][32] Boron is a typical microalloying element, which even in small additions in steel have a great influence on the mechanical properties. [33] In addition, FeB alloys are used to avoid the interstitial nitrogen effect and to improve the steel's formability.…”

Section: A Classification Of Ferroalloys and Their Applications In Steelmakingmentioning

confidence: 99%

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Wang

Karasev

Park

et al. 2021

Metall Mater Trans B

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Ferroalloys have become increasingly important due to their indispensable role in steelmaking. In addition, the demand for improved steel qualities has increased considerably, which in turn highlights the quality of ferroalloys. This is due to the fact that the impurities in ferroalloys directly and significantly influence the quality of steel products. To gain a better understanding of the main trace elements and inclusions in ferroalloys (such as FeSi, FeMn, SiMn, FeTi, FeCr, FeMo, FeNb, FeV, FeB, some complex ferroalloys) and their behaviours in steel melt after the additions of these ferroalloys, information from a large number of previous results on this topic was extensively reviewed in this work. The applications of different ferroalloys and their production trends were discussed. In addition, the effects of some trace element impurities from ferroalloys on the inclusion characteristics in steel were also discussed. The possible harmful inclusions in different ferroalloys were identified. Overall, the results showed that the inclusions present in ferroalloys had the following influence on the final steel cleanliness: (1) MnO, MnS and MnO–SiO2–MnS inclusions from FeMn and SiMn alloys have a temporary influence on the steel quality; (2) the effect of large size SiO2 inclusions (up to 200 μm) in FeSi and FeMo alloys on the steel cleanliness is not fully understood. The effect of Al, Ca contents should be considered before the addition of FeSi alloys. In addition, Al2O3 inclusions and relatively high Al content are commonly found in FeTi, FeNb and FeV alloys due to their production process. This information should be paid more attention to when these ferroalloys are added to steel; (3) except for the existing inclusions in these alloys, the Ti-rich, Nb-rich, V-rich carbides and nitrides, which have important effects on the steel properties also should be studied further; and (4) specific alloys containing REM oxides, Cr–C–N, Cr–Mn–O, Al2O3, Al–Ti–O, TiS and Ti(C, N) have not been studied enough to enable a judgement on their influence on the steel cleanliness. Finally, some suggestions were given for further studies for the development of ferroalloy productions.

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Section: A Classification Of Ferroalloys and Their Applications In Steelmakingmentioning

confidence: 99%

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Wang

Karasev

Park

et al. 2021

Metall Mater Trans B

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“…In the production of high-strength oil pipes with a yield strength of 728–827 MPa or more, according to API Spec 5CT, the phase ratio after quenching must contain at least 95% martensite. Therefore, the design of a high-strength sulfur-resistant tube should be based on Cr-Mo-V steel with further microalloying additions to ensure high hardenability, uniform mechanical properties over the wall thickness and high corrosion resistance in H 2 S environments [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Titanium and Boron Microalloying on Sulfide Stress Cracking in C110 Casing Steel

Zhang

Liu

2020

Materials

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The effect of Ti and B microalloying on the hardenability, prior austenite grain size (PAGS), mechanical properties, and sulfide stress cracking (SSC) of C110 grade steel was studied by Jominy testing, static tensile testing, an optical microscope (OM), scanning electron microscopy (SEM) and double cantilever beam (DCB) testing. The results show that the addition of 0.015% Ti and 0.002% B into a medium-carbon Fe-Cr-Mo-Nb-V steel increased the hardenability and refined the PAGS and quenched martensite packets, and the size of carbides was reduced. It is believed that these behaviors are responsible for the improvement in the threshold stress intensity factor KISSC.

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Influence of force parameters of rotary friction welding on the microstructure and mechanical properties of welded joints of high-strength drill pipes

Atamashkin,

Priymak,

Tulibaev

et al. 2024

Int J Interact Des Manuf

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Influence of microalloying with boron on the structure and properties of high-strength oil pipe

Cited by 7 publications

References 1 publication

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Non-metallic Inclusions in Different Ferroalloys and Their Effect on the Steel Quality: A Review

Effect of Titanium and Boron Microalloying on Sulfide Stress Cracking in C110 Casing Steel

Influence of force parameters of rotary friction welding on the microstructure and mechanical properties of welded joints of high-strength drill pipes

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