The Influence of a Microalloying System on the Structure of a Coiled Strip Produced under Conditions of Endless Strip Production

Naumenko, V. V.; Bagmet, O. A.; Matrosov, M. Yu.; Muntin, A. V.; Kichkina, A. A.; D’yakonov, D. L.

doi:10.3103/s0967091220070104

Cited by 3 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the differences in design ideas and equipment arrangement of these endless production lines, different effects on the microstructure and properties of hot rolled steel are inevitable. at present, relevant researches mainly focus on the advantages of endless production line [6][7][8] and its product [9][10][11], but lack of detailed research on comprehensive performance. Drawability and stretchability of low carbon steel sheets produced by the CeM process [12] and the eSP process [13] are investigated, and it is considered that these differences are related to the effects of manufacturing processes of different production lines on the mi-crostructure, texture and earing behavior of steel plates.…”

Section: Introductionmentioning

confidence: 99%

Effect of Final Rolling Temperature on Microstructure, Properties and Texture of Hot Rolled Strip by New Endless Rolled Line

Li,

Tian,

Zhao

et al. 2023

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

EffEct of final Rolling tEmpERatuRE on micRostRuctuRE, pRopERtiEs and tExtuRE of Hot RollEd stRip by nEw EndlEss RollEd linEDonghua steel continuous casting-rolling (DSCCR) line is a new endless rolling line in which tunnel heating furnace is added before and after roughing mills to change the temperature field of slab and intermediate slab, but this change will affect the microstructure and properties of hot rolled plate. Therefore, the microstructure evolution, mechanical properties, texture analysis, hole expanding and earing test of 2.0 mm thick hot rolled plate produced by DSCCR line at different final rolling temperature of 860°C, 840°C and 820°C are studied. The results show that with the decrease of final rolling temperature, there is an obvious layered microstructure distribution along the thickness direction, and the surface coarse grain area gradually expands inward, at the same time the morphology of cementite also changed from large multi domain lamellar pearlite and long rod cementite to small single domain lamellar pearlite and short rod cementite. The engineering stress-strain curves have discontinuous yield with the yield elongation of 4-5% and the elongations are more than 35%. eBSD analysis shows that small angle grain boundaries and deformed grains increase significantly with the decrease of final rolling temperature, and are mainly distributed in fine grain area. hole expanding and earing tests show that with the decrease of final rolling temperature, the earing performance decreased but the limiting hole expanding ratio is similar.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Final Rolling Temperature on Microstructure, Properties and Texture of Hot Rolled Strip by New Endless Rolled Line

Li,

Tian,

Zhao

et al. 2023

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

show abstract

Features of the formation of structure and mechanical properties in rolled products of various thicknesses from low-carbon microalloyed steel produced by casting and rolling complex

Naumenko

Сметанин²,

Muntin

et al. 2021

Izv. vysš. učebn. zaved., Čern. metall.

View full text Add to dashboard Cite

The article considers results of the study of microstructure parameters effect on the impact strength in temperature range from 0 to –80 °C in 20 °C increments of Charpy samples with a sharp stress concentrator and Mesnager test pieces with a circular stress concentrator from rolled coils of low-carbon microalloyed steel with various thicknesses. The used roll products were produced in conditions of JSC “Vyksa Metallurgical Plant”. The tests were performed using optical and scanning electron microscopy. It is shown that with the same chemical composition and thermomechanical treatment modes, the metal of smaller thickness (6, 8 mm) is characterized by higher strength properties (on average, by 10 MPa for temporary resistance, by 30 MPa for yield strength) and a margin for viscous properties at negative temperatures at close values of grain score and average grain size corresponding to 10 – 11 numbers according to the State standard GOST 5639. The metal with a thickness of 12 mm has the lowest level of cold resistance, and the temperature of brittle transition is minus 50 °C. Structure of rolled products of various thicknesses has a variation in grain size. Rolled metal of smaller thicknesses have a smaller grains corresponding to number 14, rolled metal of larger thicknesses has a larger grains corresponding to number 8. By conducting electron microscopic studies using the backscattered electron method, it was found that a greater number of large-angle boundaries, which are barriers for brittle cracks propagation, are observed in the 6, 8 mm thick rolled products. The constructed orientation maps of the microstructure showed the presence of pronounced deformation texture corresponding to the orientations <110>||RD (rolling direction) and (<113>...<112>)||RD for rolled products with a thickness of 6 mm.

show abstract

Formation Features of the Structure and Mechanical Properties in Rolled Products with Various Thicknesses from Low-Carbon Microalloyed Steel Produced at an Integrated Casting and Rolling Facility

et al. 2021

View full text Add to dashboard Cite

The Influence of a Microalloying System on the Structure of a Coiled Strip Produced under Conditions of Endless Strip Production

Cited by 3 publications

References 4 publications

Effect of Final Rolling Temperature on Microstructure, Properties and Texture of Hot Rolled Strip by New Endless Rolled Line

Effect of Final Rolling Temperature on Microstructure, Properties and Texture of Hot Rolled Strip by New Endless Rolled Line

Features of the formation of structure and mechanical properties in rolled products of various thicknesses from low-carbon microalloyed steel produced by casting and rolling complex

Formation Features of the Structure and Mechanical Properties in Rolled Products with Various Thicknesses from Low-Carbon Microalloyed Steel Produced at an Integrated Casting and Rolling Facility

Contact Info

Product

Resources

About