Cold-Resistant Steels: Structure, Properties, and Technologies

Хлусова, Е. И.; Sych, O. V.; Орлов, В. В.

doi:10.1134/s0031918x21060041

Cited by 9 publications

(6 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was shown in several researches that non-tempered martensite is characterized by increased resistance against different kinds of wear, which is connected in the conditions of friction loading with development of the processes of dynamic ageing that can lead to efficient fixing of dislocations and intensive strengthening [19][20][21][22][23].…”

Section: Results Of the Research And Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Study of phase and structural transformations in overcooled austenite for high-strength cold resistant steel during continuous cooling

Efimova,

Emaleeva,

Gulin

et al. 2023

cisisr

View full text Add to dashboard Cite

Essential part of strategic objects in oil/gas and machine-building complexes, transport industry and bridge building are operated in the conditions of simultaneous effect of low temperatures, static and dynamic loads as well as intensive wear. High-strength cold-resistance steels are considered as one of the materials, which can be used in such conditions. At present time, providing of principally new qualitative combination of properties of such steels is the actual scientific problem; the main parameters of these steels should be superior to the existing international analogues, they should present the unique combination of high strength, ductility as well as wear and cold resistance at the temperatures down to -70 °C. However, improvement of strength properties and hardness of rolled products leads to substantial decrease of cold resistance and ductility of steel; so, reaching of combination between high strength state and cold resistance is possible during definite structural and phase transformations, occurring in steels. Regularities of phase and structural transformations, occurring in high-strength cold-resistant steel with the following chemical composition (%, mass.): 0.15 C; 1.5 Mn; 0.20 Si; 1.7 (Ni+Cu); 0.035 (Ti+V+Nb); 0.0040 B during continuous cooling, were established in this research. Thermokinetic diagram of decomposition of overcooled austenite was built. It is shown, that steel with above-mentioned composition, which contains mainly if lathe martensite with small amount of bainite, is forming during continuous cooling with rate within the range 10-110 °С/с. Most part of martensite with lathe morphology can provide high strength of the researched steel, presence of dispersed structure of low-carbon bainite can provide high characteristics of resistance to brittle destruction, and hardness more than 350 HBW, which is achieved during cooling with rate more than 50 °С/с can provide high wear resistance.

show abstract

Section: Results Of the Research And Discussionmentioning

confidence: 99%

“…The most part of martensite with lathe morphology in the structure can provide high strength of the examined steel, while presence of dispersed structure of low-carbon bainite can provide high parameters of resistance to destruction [17][18][19][20][21].…”

Section: Results Of the Research And Discussionmentioning

confidence: 99%

Study of phase and structural transformations in overcooled austenite for high-strength cold resistant steel during continuous cooling

Efimova,

Emaleeva,

Gulin

et al. 2023

cisisr

View full text Add to dashboard Cite

show abstract

“…This is evidence of the presence of carbon and oxide films in defective samples, which are a metallurgical defect and cause a drop in low-temperature impact strength. Based on the results of X-ray microanalysis destruction surface, it can be argued tha the composition of the film includes Al, Si, C, Na, K. The reason for their formation may be slag-forming mixtures (SFM) used in continuous casting steel, which include these elements [13,16,17].…”

Section: Resultsmentioning

confidence: 99%

“…When the metal is cooled to the temperature of about 800 °С, the reaction 2{СO}→C + {CO2} actively proceed (Figure 16) with carbon emission to the surface of the microcavities. Based on the results of X-ray microanalysis destruction surface, it can be argued that the composition of the film includes Al, Si, C, Na, K. The reason for their formation may be slag-forming mixtures (SFM) used in continuous casting steel, which include these elements [13,16,17].…”

Section: Resultsmentioning

confidence: 99%

“…Structural anisotropy parameters of rolled products can include the density, the volume fraction and the nature of the distribution of non-metallic inclusions, the anisotropy of the grain size (structural element) over the width and thickness of the sheet, microstructural banding, the size and the nature of the bainite colonies distribution, and the degree of axial segregation band development [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural Anisotropy Parameters’ Effect on the Low-Temperature Impact Strength of Alloy Steels in Rolled Products

Kovalyova

Issagulov

Kovalev

et al. 2023

Metals

View full text Add to dashboard Cite

The present work is devoted to the study of the influence of the parameters of the structural anisotropy of rolled products on the low-temperature impact strength of alloyed steels. A quantitative metallographic analysis of the microstructure of rolled steel samples obtained after testing for low-temperature toughness was carried out. It was established that the main reason for the decrease in the low-temperature impact strength of rolled steel samples is a highly developed segregation band enriched with carbon films formed at the stage of steelmaking conversion in violation of the technology of continuous casting of steel. The microstructural analysis of rolled stock samples was used in the work, and studies of the fracture surface of rolled stock samples were carried out with a scanning electron microscope using X-ray microanalysis methods. The studies carried out showed that the metallurgical quality of sheets of one heat, as well as individual samples within one sheet, varied over a wide range, from satisfactory to unacceptably low. It was established that the main reason for the decreasing low-temperature impact strength of rolled products was a highly developed segregation band enriched with carbon films, formed at the stage of steelmaking in case of violation of the continuous casting of steel technology. The multivariate statistical analysis carried out showed that only the size of the segregation band has an effect on the low-temperature impact strength of 10 mm thick rolled coil samples.

show abstract

Innovations and challenges in marine steels for polar icebreaker manufacturing – a comprehensive review

Ghazanlou,

Amini,

Carrier

et al. 2024

Ships and Offshore Structures

View full text Add to dashboard Cite

Cold-Resistant Steels: Structure, Properties, and Technologies

Cited by 9 publications

References 49 publications

Study of phase and structural transformations in overcooled austenite for high-strength cold resistant steel during continuous cooling

Study of phase and structural transformations in overcooled austenite for high-strength cold resistant steel during continuous cooling

Structural Anisotropy Parameters’ Effect on the Low-Temperature Impact Strength of Alloy Steels in Rolled Products

Innovations and challenges in marine steels for polar icebreaker manufacturing – a comprehensive review

Contact Info

Product

Resources

About