Effect of Cooling Rate and Coiling Temperature on Microstructure and Precipitation Behavior of a 700 MPa Weathering Steel

Song, Liying; Gao, Xiuhua; Xue, Qi-he; Li, Jinbo; Wu, Hongyan

doi:10.1007/s11665-022-07034-6

Cited by 10 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this paper, the internal stress level of each sample was characterized by KAM [20], and the results are shown in Figure 8. Blue indicates low stress area and red indicates high stress area.…”

Section: Resultsmentioning

confidence: 99%

Homogeneous cooling control technology for high-strength low-alloy hot-rolled strip

Fei

Zhao

Xue

2023

Ironmaking & Steelmaking

View full text Add to dashboard Cite

Heterogeneities of transverse temperature during laminar cooling of high-strength low-alloy hotrolled strip can cause heterogeneous distribution of microstructure, mechanical property and internal stress. Edge masking is a control technology that can be used to improve laminar cooling heterogeneities. In this paper, different edge masking schemes were set up based on the transverse transformation characteristics of the strip. The results show that a slow cooling of 7.1 s during transformation could reduce the heterogeneity of grain size, internal stress and microhardness at the edge and middle of the strip. In addition, the relationship model between grain size and six variables such as transformation start temperature was established by PCA. It provided a new idea for the construction of a microstructure prediction model under nonlinear cooling.

show abstract

Section: Resultsmentioning

confidence: 99%

Homogeneous cooling control technology for high-strength low-alloy hot-rolled strip

Fei

Zhao

Xue

2023

Ironmaking & Steelmaking

View full text Add to dashboard Cite

show abstract

“…[11] For instance, it is known that the retained strain after the runout table (ROT) cooling process provides a higher driving force for precipitation during the coiling process. [12] Some authors have particularly investigated the controlled rolling process and compared the effects of single-pass, double-pass, and multipass rolling on the properties of microalloyed steels and found that multipass rolling has contributed to the performance enhancement of microalloyed steels. In this regard, the microstructure of low-carbon microalloyed steels produced by the TMCP technique was found to exhibit fine ferrite grains, which enhanced the strength and fracture toughness of the microalloyed steels.…”

Section: Introductionmentioning

confidence: 99%

“…[ 11 ] For instance, it is known that the retained strain after the runout table (ROT) cooling process provides a higher driving force for precipitation during the coiling process. [ 12 ]…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical Control of Microstructure and Precipitation in Vanadium Microalloyed Steel: Influence of Finish Rolling and Coiling Temperatures

Wu,

Yang,

Tang

et al. 2024

steel research int.

View full text Add to dashboard Cite

Six hot compression tests are conducted using the Gleeble3500 thermomechanical simulator to investigate the microstructural evolution and precipitation behavior in low‐C–Mn V‐microalloyed steel. The specimens are subjected to hot isothermal compression deformation of 87%. The optical microscopy and transmission electron microscopy using carbon extraction replica method are used to characterize the microstructures and precipitation after the simulated thermomechanical controlled process and coiling. The results indicate that increasing the finish rolling temperature benefits the refinement of ferrite grains but has little influence on the refinement of the precipitates. It is also observed that lower coiling temperatures (CTs) promote the formation of fine precipitates. When the CT is 500 °C, the average precipitate size is found to be 86 nm. Furthermore, it is found that the CT significantly influences the nucleation sites of the precipitates inter alia, the matrix, interphase, grain boundaries, and dislocations. As expected, at higher CTs, nucleation is predominantly on the defects rather than the matrix.

show abstract

Microstructural Analysis and Hardening Mechanism of High-Strength Low-Carbon Weathering Steel: Effect of Coiling Temperature

Dai,

Guo,

Liu

et al. 2024

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Effect of Cooling Rate and Coiling Temperature on Microstructure and Precipitation Behavior of a 700 MPa Weathering Steel

Cited by 10 publications

References 45 publications

Homogeneous cooling control technology for high-strength low-alloy hot-rolled strip

Homogeneous cooling control technology for high-strength low-alloy hot-rolled strip

Thermomechanical Control of Microstructure and Precipitation in Vanadium Microalloyed Steel: Influence of Finish Rolling and Coiling Temperatures

Microstructural Analysis and Hardening Mechanism of High-Strength Low-Carbon Weathering Steel: Effect of Coiling Temperature

Contact Info

Product

Resources

About