Influence of coating and dew point on hearth roll pickup

Zheng, Xiao-fei; Kang, Yonglin; Zhou, Jian

doi:10.1007/s42243-019-00231-z

Cited by 5 publications

(3 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Substitute the research results of Zheng et al [ 41 ] into Equation (7). Using stainless steel deformation parameter, the activation energies were determined for experimental parameter B (

$\overset{.

…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Evolution Behavior and Fracture Criterion of Carbides in D2 Cold‐Work Die Steel During Hot Working Process

Liu

et al. 2023

steel research int.

View full text Add to dashboard Cite

Investigating the fracture mechanisms of carbides is of paramount importance for optimizing hot working processes in die steels. This work establishes a comprehensive criterion equation to predict the behavior of carbide fracture in D2 cold‐work die steel during hot working process. High‐temperature laser confocal microscope is employed to prepare samples with varying solidification rates. Subsequently, these samples are subjected to a range of heating temperatures spanning from 1000 °C and 1100 °C. The samples are analyzed utilizing scanning electron microscopy energy spectrum analysis and X‐ray diffraction. The activation energy of M7C3 carbides is calculated through the utilization of kinetic equations and the Arrhenius law. Additionally, a criterion model for the fracture behavior of M7C3 carbides in D2 cold‐work die steel is established. The results reveal that thin hollow rod‐shaped carbide is easy to fracture. Moreover, the activation energy for phase transition of M7C3 carbides in D2 cold‐work die steels is determined to be 226.974 KJ mol−1. Furthermore, the fracture behavior of carbides in D2 cold‐work steel is found to be influenced by various factors such as heating temperature, deformation rate, and peak stress. Finally, the criterion model demonstrates substantial agreement with the experimental observations gathered, affirming its reliability and accuracy.

show abstract

“…Substitute the research results of Zheng et al [ 41 ] into Equation (7). Using stainless steel deformation parameter, the activation energies were determined for experimental parameter B (

$\overset{.

…”

Section: Discussionmentioning

confidence: 99%

“…Microstructure of carbides in steel at different strain rates a) 0.2 s −1 ; b) 0.4 s −1 (Reproduced with permission. [ 41 ] Copyright 2014, Journal of Iron and Steel Research International (in Chinese)).…”

Section: Discussionmentioning

confidence: 99%

Evolution Behavior and Fracture Criterion of Carbides in D2 Cold‐Work Die Steel During Hot Working Process

Liu

et al. 2023

steel research int.

View full text Add to dashboard Cite

show abstract

“…Especially, MCrAlY (M=Co, Ni, or Co + Ni) has good oxidation resistance, hot corrosion resistance, and thermal fatigue properties, and is widely used as the binder in cermet coatings, however, its wear resistance is poor [9][10][11][12]. According to the reported literature [7,[13][14][15][16], adding Al 2 O 3 , ZrO 2 , TiB 2 , CrB 2 , ZrB 2 , and other ceramic phases to the MCrAlY coating could form an MCrAlY-based cermet coating that significantly improves the nodulation resistance and wear resistance at high temperature while maintaining the high bond strength and good high-temperature oxidation resistance of MCrAlY. Bobzin et al [15] applied a high-energy ball-milling process to prepare the mixture of NiCoCrAlY and ZrO 2 -Y 2 O 3 (NiCoCrAlY-YPSZ mechanical alloyed powder), and the wear rate of NiCoCrAlY-5 wt.% YPSZ coating prepared by high-velocity oxygen fuel (HVOF) was 1.75 × 10 −4 mm 3 /N•m), which was only half of the conventional NiCoCrAlY coating.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Oxidation Behavior of Plasma-Sprayed CoCrAlTaY-30Al2O3 Cermet Coating at 1050 °C

2022

View full text Add to dashboard Cite

Cermet coatings with ceramic and metal characteristics will play an increasingly important role in extending the service life of critical components in harsh service environments. In this paper, CoCrAlTaY-30Al2O3 (wt.%) cermet coating was prepared by air plasma spraying technique. The effect of powder feeding rate on the microstructure and mechanical properties of the coating and its high-temperature oxidation behavior was investigated. The results showed that the CoCrAlTaY-30Al2O3 spraying powder mainly consisted of Al5Co2, α-Al2O3, Co, Cr7C3, and TaC in five phases. The microstructure of cermet coating was uniform and its porosity was relatively low. The coating was mainly composed of Al5Co2, Cr, and Al2O3 phases, and the change of powder feeding rate had no obvious effect on the phase composition of the coating. When the powder feeding rate was 32 g/min, the minimum porosity of the coating was (3.68 ± 0.86)%, and the maximum Vickers hardness and binding strength were (664.9 ± 55.9) HV0.3 and (78.6 ± 6.6) MPa, respectively. The oxidation rate constant kp1 of the coating at 1050 °C was 0.066 mg2∙cm−4∙h−1, and the fitted curve R2 value was 0.99547. In the oxidization initial stages, the alloy elements Co, Al, and Cr in the cermet coating were rapidly oxidized to form CoO, Al2O3, and Cr2O3. Then Al2O3 and Cr2O3 reacted with CoO to form Co(Al,Cr)2O4 spinel oxides. The θ-Al2O3 phase was formed after initial oxidation while the θ-Al2O3 phase was completely transformed into α-Al2O3 after 200 h. The oxide film mainly contained Co(Cr,Al)2O4, Cr2O3, and α-Al2O3 phases.

show abstract

High-temperature corrosion resistance of Fe–Cr–Mo amorphous coating for water wall protection of USC boiler

Zhang,

Zhou,

Jin

et al. 2024

J. Iron Steel Res. Int.

View full text Add to dashboard Cite

Influence of coating and dew point on hearth roll pickup

Cited by 5 publications

References 16 publications

Evolution Behavior and Fracture Criterion of Carbides in D2 Cold‐Work Die Steel During Hot Working Process

Evolution Behavior and Fracture Criterion of Carbides in D2 Cold‐Work Die Steel During Hot Working Process

High-Temperature Oxidation Behavior of Plasma-Sprayed CoCrAlTaY-30Al2O3 Cermet Coating at 1050 °C

High-temperature corrosion resistance of Fe–Cr–Mo amorphous coating for water wall protection of USC boiler

Contact Info

Product

Resources

About