Effect of Deformation-Thermal Processing on the Microstructure and Mechanical Properties of Low-Carbon Structural Steel

Sergeev, S. N.; Safarov, I. M.; Zhilyaev, Alexander P.; Galeev, R. M.; Gladkovsky, S. V.; Dvoinikov, D. A.

doi:10.1134/s0031918x21060090

Cited by 4 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Давление прессования составило 7. [15,16,17]. При знакопеременном циклическом нагружении образцов слоистых композитов по «мягкой» схеме (с контролем по нагрузке) при максимальной нагрузке в полуцикле растяжения и сжатия 12 кН и величине напряжения 80 МПа, отнесенного к сечению всего композита и не превышающего его предварительно определенный статический предел упругости, в течение всех 100 циклов нагружения были зафиксированы выраженные петли механического гистерезиса в координатах «напряжение-деформация».…”

Section: материалы и методы исследованияunclassified

Brittle fracture resistance and damping properties of layered metal-polymer composites

et al. 2021

View full text Add to dashboard Cite

One of the topical trends in modern materials science is the development and study of new layered metal-polymer composites, which are increasingly used in aerospace engineering, automotive and transport engineering. The metal base of these composites provides a high level of strength properties and impact strength, and the polymer interlayer allows obtaining high damping properties due to its ability to dissipate the energy of elastic vibrations. Of a considerable practical interest is one of the varieties of metal-polymer composite materials based on a sandwich structure -layered steel-rubber composite characterized by pronounced viscoelastic properties, which allows them to be used as vibration damping elements in transport systems. In this work, the possibility of obtaining promising layered metal-rubber composites based on low-carbon steels (Fe-2Mn-1Si steel, IF steel), aluminum alloy Al-Mg3 and heat-and-frost-resistant rubber V-14-1NTA by hot pressing is studied. The influence of the composition and design of composites on the impact strength at temperatures of 20 and −60°C and the damping ability characteristics of materials such as the tangent of the angle of mechanical losses (tg δ), the modulus of elasticity (E ') and the modulus of viscosity (E '') are determined by the method of dynamic mechanical analysis. The possibility of using layered metal-rubber composites with increased resistance to brittle fracture in the region of low climatic temperatures, as well as in structural elements of transport systems with high vibration resistance is shown.

show abstract

Section: материалы и методы исследованияunclassified

Brittle fracture resistance and damping properties of layered metal-polymer composites

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, simply relying on methods such as alloying, pressure processing and thermal processing to improve the strength of automotive steel can no longer meet the production requirements (low cost and favorable mouldability) and the usage requirements (high product of strength and elongation, etc.) [2][3][4][5][6] . At present, the product of strength and elongation of high-strength automotive steel is below 25,000 MPaꞏ%, so developing high-strength automotive steel with favorable mouldability is urgent [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4][5][6] . At present, the product of strength and elongation of high-strength automotive steel is below 25,000 MPaꞏ%, so developing high-strength automotive steel with favorable mouldability is urgent [5][6][7] . Apart from traditional automotive steel, this paper also introduces Nb, a carbide forming element, and applies a new technique named the quenching-partitioning-tempering (Q-P-T) process.…”

Section: Introductionmentioning

confidence: 99%

Study on Thermal Process and Microstructure & Properties of High Strength Automotive Steel

Ji¹,

Chen²,

Wang³

2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This paper studies how the Nb content affected mechanical properties and microstructures of automotive steel processed by quenching and tempering (Q-T) and quenching-partitioning-tempering (Q-P-T) with the help of tensile testers, X-ray diffractometers, scanning electron microscopes, transmission electron microscopes and other equipment. It was demonstrated that when the Nb content remained the same, Agt (total elongation at maximum force), A (elongation after fracture) and R m·A (the product of strength with ductility) of the steel processed by Q-P-T were higher than those of the steel processed by Q-T; and when the steel was treated by the same thermal process, as the Nb content increased, its R p0.2 (yield strength) and R m (tensile strength) would grow, while A gt, A and R m·A would rise first and then decline. No matter if treated by Q-T or Q-P-T, the microstructures of the steel containing 0% and 0.03% of Nb separately were always lath martensite and film-like retained austenite located between laths. When processed by Q-P-T, the steel containing 0.03% Nb saw the largest strength-ductility product. This was because Nb could help refine the sizes of the original austenite grain and the lath martensite and precipitate nano-sized NbC; and the Q-P-T process was more effective in thickening the film-like retained austenite in steel and promoting the dispersed precipitation of the NbC.

show abstract

“…This is caused by the lack of work hardening ability to store and accommodate more dislocations. [11] In addition, it is difficult to fabricate large bulky samples using the SPD technique due to the equipment and operational limitations. [12] In recent decades, the heavy hot/warm deformation techniques to fabricate high-quality fine-grain structures have received great interest from researchers.…”

Section: Introductionmentioning

confidence: 99%

“…[23] The heavy hot/warm deformations can make steel obtain superior mechanical properties and uniform plastic deformation due to sufficient strain hardening delaying the onset of necking. [11] It can effectively obtain nanograins with a lower applied accumulated strain. In this work, three kinds of Fe-30Mn-XSi-YAl steels with different SFE values were manufactured by CR at different rolling temperatures, ranging from 773 to 1373 K. The effects of different CR temperatures and SFE values on the microstructure evolution and mechanical properties of experimental samples are studied in detail, which provide an experimental and theoretical fundamental on the formation of nanostructures of metal material with plastic stability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Caliber Rolling Temperatures on Microstructure Evolution and Mechanical Properties of High‐Mn Steels

Chen

Sun

et al. 2022

steel research int.

View full text Add to dashboard Cite

Three kinds of high-Mn steels are successfully fabricated by caliber rolling at different rolling temperatures, ranging from 773 to 1373 K. The effects of rolling temperature on the microstructure and mechanical properties of steels with different stacking fault energies (SFEs) are studied. With the increase in rolling temperature, the fibrous grains of the high-Mn steels transform into equiaxed grains, and the microstructure evolution mechanism changes from discontinuous dynamic recrystallization to continuous dynamic recrystallization. The yield strength and microhardness of the experimental samples increase significantly with decreasing caliber rolling (CR) temperature, while the samples sacrifice various degrees of plasticity. Fe-30Mn-4Si-2Al steel with low SFE value fabricated by warm CR has the best microhardness (512 HV) and yield strength (1078.82 MPa), as well as a notable fracture elongation (11.10%) among three experimental steels. This is mainly attributed to the stability of dislocations and the dislocations and twin/ε-martensite competitive mechanisms.

show abstract

Effect of Deformation-Thermal Processing on the Microstructure and Mechanical Properties of Low-Carbon Structural Steel

Cited by 4 publications

References 12 publications

Brittle fracture resistance and damping properties of layered metal-polymer composites

Brittle fracture resistance and damping properties of layered metal-polymer composites

Study on Thermal Process and Microstructure & Properties of High Strength Automotive Steel

Effect of Caliber Rolling Temperatures on Microstructure Evolution and Mechanical Properties of High‐Mn Steels

Contact Info

Product

Resources

About