Key trends in the development of a metallurgical technology to meet the growing steel quality requirements

Shakhpazov, E. Kh.; Зайцев, А. И.; Rodionova, I. G.; Semernin, G. V.

doi:10.1134/s0036029511120172

Cited by 7 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach opens up wide opportunities for the creation of new high-quality steels while a significant reduction in material and energy production costs, since the composition of obtained complex inclusions consists of widely distributed elements, which are usually present in steel and slag, e.g. Ca, Al, Mn, Si, C, and, even, the so-called harmful impurities -O, N, S [3,4,12]. No less significant effect is achieved due to the neutralization of the impurities' negative influence on technological and service properties of steel, and expansion of raw materials base.…”

Section: Specifics Of the Influence Of Nonmetallic Inclusions On The mentioning

confidence: 99%

“…The solution of this problem lies only in the way of developing fundamentally new scientific, technical methods of research and solutions. According to the results of a large volume of studies [1][2][3], they are primarily related to the development and use of adequate predicting methods and effective technological strategies of controlling a number of characteristics. They include type, composition, quantity, size, morphology, and distribution by volume of metal of nonmetallic inclusions, phase precipitates, forms of presence of impurities controlling the resulting structural state and complex properties of steel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Promising directions of increasing the properties of steel

Зайцев¹,

Koldaev²,

Arutyunyan³

2018

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

The study of regularities of the formation and evolution of nonmetallic inclusions and phase precipitates in modern structural steels has been carried out. It has been shown that the formation of several types of complex nonmetallic inclusions results in a substantial increase in the complex of steel properties and neutralizing the negative influence of impurities while a reduction in costs. An even more significant improvement in the properties of steel can be achieved by controlling the characteristics of carbide, carbonitride, and other types of phase precipitates. Herewith, ferritic steels are the most promising. The previously unreachable complex of indicators of difficult to combine service properties of these steels has been achieved by the formation of a homogeneous fine-dispersed microstructure and a volumetric system of primarily interphase precipitates. Based on established principles, effective technologies for the production of a wide range of various types of steels have been developed.

show abstract

Section: Specifics Of the Influence Of Nonmetallic Inclusions On The mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Promising directions of increasing the properties of steel

Зайцев¹,

Koldaev²,

Arutyunyan³

2018

Nanosystems: Phys. Chem. Math.

View full text Add to dashboard Cite

show abstract

Development of a New Generation of High-Strength Low-Carbon Microalloyed Steels for the Main Layer of Clad Rolled Product

et al. 2015

Self Cite

View full text Add to dashboard Cite

The importance is demonstrated of developing new low-carbon high-strength steels for a marked improvement in both mechanical and service properties of the main metal layer, strength and continuity of joined layers, and also quality characteristics of corrosion-resistant clad rolled product as a whole. In order to resolve this problem on the basis of original methods of physicochemical prediction, a new low-carbon highstrength steel is created of weldable economically alloyed steel, and its main production technology is developed. It is shown that in order to achieve simultaneously high indices of strength (yield strength more than 700 MPa, strength more than 850 MPa), ductility (relative elongation more than 17%), and other steel service properties, nanostructuring is of prime importance, realized with relatively slow metal cooling rates typical for preparing clad rolled product. Keywords: high-strength corrosion-resistant clad rolled product, main layer, high-strength low-carbon microalloyed steels, electroslag surfacing, material layer compatibility, strength, ductility, strength mechanisms, weldability, structural state, excess phase precipitation.New installations of power generation, chemical, petrochemical, coke chemistry, oil processing, and a number of other branches of industry function under conditions of extreme action of corrosive media, high temperature, pressure, variable mechanical and thermal loads, etc. In view of this, readily weldable metal materials are required in order to manufacture their components, exhibiting good corrosion resistance, high strength, ductility, and a number of other properties that are difficult to combine. Realization of a set of the properties listed in monometal material is impossible, especially considering solution of the problem for reducing material and energy consumption, and economic consumption of scarce and expensive alloying elements. Therefore, for these purposes it is promising to use high-strength corrosion-resistant clad steels that are readily weldable. Their high structural strength is provided due to the use of high-strength structural steels as a supporting layer.The range of clad steels produced by electroslag surfacing is quite limited [1]. It includes composites consisting of the main layer (steels St3, 10, 20, 09G2S) with low strength properties (ultimate strength does not exceed 600 N/mm 2 ), clad with corrosion-resistant steel of ferritic (type Kh13) or austenitic (type Kh18N10T) classes. Low strength and, as a conse-

show abstract