Precipitation behaviors of X80 acicular ferrite pipeline steel

Zhang, Aimin; Wang, Yan; Chen, Yinli; Tang, Di; Xutao, Gao; Zuo, Bin

doi:10.1007/s12613-011-0439-4

Cited by 10 publications

(2 citation statements)

References 15 publications

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“…The interest of fine grain in high yield strength steels ferritepearlite structure is therefore double, the interest of fine grains in high yield strength steels with a ferrite-pearlite structure is therefore twofold, hence the interest in the addition of elements allowing the refining of the ferritic grain [2], hence the starting grain austenitic. Grain refining is achieved by the addition of elements forming fine precipitates, which through their interaction with austenitic grain boundaries, prevent the development of these [3].…”

Section: Metallurgical Factors Determining the Properties Of Hsla Steelsmentioning

confidence: 99%

Formation and Dissolution of Carbides and Nitrides in the Weld Seam of X70 Steel by the Effects of Heat Treatments

Benarrache¹,

Benchatti²,

Benhorma³

2019

ACSM

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Welding assembly of steels HSLA (High Limit of Elasticity) occupies an important place in the mechanical industry and in the shaping industry of transport facilities, hydrocarbon storage and other industries. X70 steels have a very important place in the mechanical industry, naval and oil industry. Also, were interested by studying the effect of heat treatments (energy supply) on structural stability (formation and dissolution of carbides and nitrides) in the weld bead zones of X70 steel and the zones adjacent areas (HAZ and During welding, the weld bead undergone very large temperature variations until melting followed by a more or less rapid solidification (out of equilibrium thermodynamic state), which causes an evolution of the microstructure during application of heat treatments (supply energy), which subsequently affects the mechanical properties and / or the electrochemical behavior (corrosion). The type of heat treatment influences the diffusion and backscatter of the addition elements with respect to the formation of carbides and nitrides in the microstructure of the weld beads.

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Section: Metallurgical Factors Determining the Properties Of Hsla Steelsmentioning

confidence: 99%

Formation and Dissolution of Carbides and Nitrides in the Weld Seam of X70 Steel by the Effects of Heat Treatments

Benarrache¹,

Benchatti²,

Benhorma³

2019

ACSM

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“…For example, Zhao et al [20] showed that dendritic precipitates in the as-cast steel slabs precipitate mainly at grain boundaries, and these dendritic precipitates dissolved and re-precipitated into two kinds of carbonitrides: Ti and Nb-rich (Ti, Nb)(C, N) carbonitrides during reheating. Wu et al [14] reported the influence of finish rolling temperatures and tempering temperatures on microstructure and mechanical properties, and found that there were more granular bainite and strain-induced TiC precipitates in the quenched microstructure.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Microalloying on the Precipitation Behavior and Strength Mechanisms of X80 High-Strength Pipeline Steel under Different Processes

Chen

et al. 2023

Crystals

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Pipeline steel is a special type of steel used for transporting, for example, oil and natural gas. This study focuses on X80-grade pipeline steel modified with the addition of Nb and Nb-V at different cooling rates (air cooling or quenching) after hot rolling and subjecting it to quenching and tempering heat treatment. Based on multiscale characterization techniques, the effects of microalloying and the cooling rate after hot rolling on the microstructure, precipitation behavior, and strengthening mechanisms were studied. The results showed that the strengths of quenched steels were higher than those of air-cooled steels, and the increase in strength was more pronounced with the addition of Nb-V than with the addition of Nb alone in the steels. Under the same cooling condition, the strengths of Nb-V-added steels were larger than those of Nb-added steels. Additionally, the Nb-V addition promotes the formation of lath structures. The yield stress of the steels, calculated by using measured microstructural parameters following the linear addition of strengthening, is in good agreement with the measured values.

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Effect of Pre-strain on Microstructure and Stamping Performance of High-strength Low-alloy Steel

Liu,

Wen,

Liu

et al. 2024

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Precipitation behaviors of X80 acicular ferrite pipeline steel

Cited by 10 publications

References 15 publications

Formation and Dissolution of Carbides and Nitrides in the Weld Seam of X70 Steel by the Effects of Heat Treatments

Formation and Dissolution of Carbides and Nitrides in the Weld Seam of X70 Steel by the Effects of Heat Treatments

The Effects of Microalloying on the Precipitation Behavior and Strength Mechanisms of X80 High-Strength Pipeline Steel under Different Processes

Effect of Pre-strain on Microstructure and Stamping Performance of High-strength Low-alloy Steel

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