Effect of Batch Annealing Temperature on Microstructure and Resistance to Fish Scaling of Ultra-Low Carbon Enamel Steel

Liu, Zaiwang; Kang, Yonglin; Zhang, Zhimin; Shao, Xin

doi:10.3390/met7020051

Cited by 3 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…That is, the fish-scaling phenomenon is closely related to the diffusible hydrogen atoms in enamel steel [7,8]. Optimizing the chemical composition and production process to increase the number of hydrogen traps in steel is the main method to improve the fish-scaling resistance [5,9,10]. Theoretically, TiC, NbC, and VC precipitates can be used as hydrogen traps to improve the fish-scaling resistance of enamel steel.…”

Section: Of 11mentioning

confidence: 99%

Microstructure, Mechanical Properties, and Fish-Scaling Resistance of a Ti-Nb Microalloyed Hot-Rolled Enamel Steel

Zhang

Yu²,

Zhang³

et al. 2022

Metals

View full text Add to dashboard Cite

Currently, the fish-scaling resistance of most hot-rolled enamel steels is improved by adding Ti to form fine TiC carbides as hydrogen traps. Given that the hydrogen capture capacity of NbC is higher than that of TiC, the manufacture of hot-rolled enamel steels via Ti-Nb microalloying has a promising future. In the present study, a Ti-Nb microalloyed hot-rolled enamel steel was developed, and its microstructure, mechanical properties, and fish-scaling resistance were studied by optical microscopy, transmission electron microscopy, tensile test, and hydrogen permeation test. The results show that the microstructure of hot-rolled experimental steel is composed of ferrite and fine carbides, with a large number of fine precipitates uniformly distributed in the ferrite grains. After the first and second enamel firings, the average sizes of ferrite grain and precipitates gradually increase, the yield strength decreases from 711 ± 9 MPa to 471 ± 17 MPa and 409 ± 8 MPa, the tensile strength decreases from 761 ± 7 MPa to 524 ± 15 MPa and 490 ± 12 MPa, and the elongation increases from 21.0 ± 2.8% to 27.8 ± 1.8% and 33.9 ± 1.1%. The hydrogen permeation value (TH value) decreases from 35.9 min/mm2 to 6.8 min/mm2 and 3.9 min/mm2 after the first and second enamel firings. That is, the fish-scaling resistance of hot-rolled experimental steel is significantly reduced after enamel firing, which is caused by the coarsening of precipitates, resulting in a significant reduction in the density of irreversible hydrogen traps (from 1.21 × 1025 cm−3 to 6.50 × 1023 cm−3 and 4.27 × 1023 cm−3). A large amount of semi-coherent precipitates is the key to obtaining the good fish-scaling resistance of hot-rolled enamel steel.

show abstract

Section: Of 11mentioning

confidence: 99%

Microstructure, Mechanical Properties, and Fish-Scaling Resistance of a Ti-Nb Microalloyed Hot-Rolled Enamel Steel

Zhang

Yu²,

Zhang³

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

Effect of strain ratio on hydrogen permeability properties of low carbon enamel steel

Uzun¹,

Baskaya²,

Çetin³

et al. 2021

Metall. Res. Technol.

View full text Add to dashboard Cite

In this study, the effect of varying strain levels on hydrogen permeability properties were investigated. Distinct strain levels (10% and 40%) were carried out on the deep drawing test samples by using Marciniak die to simulate the forming process. Amount of strain on deep drawn material was calculated by GOM’s ARAMIS 3D deformation measurement system. Hydrogen diffusion coefficient and permeation time were calculated by using Helios II system. Light optical microscope (LOM) and scanning electron microscopy (SEM) were used for microstructure characterization. Automated inclusion/precipitation analysis was performed by Thermoscientific Explorer-4. By this study, it is aimed to understand the hydrogen permeation properties of ultra-low carbon IF steel material with varying strain values. Finally, it was determined that number of inclusion/precipitation per mm2 was significantly increased as a function of strain ratio, which improves hydrogen permeation properties.

show abstract

Research on Mechanical Properties and Hydrogen Permeation of Cold Rolled Enamel Steel

Fang

2021

2021 6th International Conference on Intelligent Informatics and Biomedical Sciences (ICIIBMS)

View full text Add to dashboard Cite

Effect of Batch Annealing Temperature on Microstructure and Resistance to Fish Scaling of Ultra-Low Carbon Enamel Steel

Cited by 3 publications

References 30 publications

Microstructure, Mechanical Properties, and Fish-Scaling Resistance of a Ti-Nb Microalloyed Hot-Rolled Enamel Steel

Microstructure, Mechanical Properties, and Fish-Scaling Resistance of a Ti-Nb Microalloyed Hot-Rolled Enamel Steel

Effect of strain ratio on hydrogen permeability properties of low carbon enamel steel

Research on Mechanical Properties and Hydrogen Permeation of Cold Rolled Enamel Steel

Contact Info

Product

Resources

About