Modern steels: Design–technologies–properties–applications

Abstract

The development of industry is strongly related to progress in the field of structural materials. These materials should be strong, resistant to fracture, susceptible to forming and should have beneficial service properties. Since the economic factors of materials manufacturing and exploitation are as important as the properties obtained, a high level of attention is being paid to the new generations of steels, which combine high mechanical parameters with low costs of production and processing.

Laser welding of the new grade of advanced high-strength steel Domex 960

“…[1][2][3][4][5][6][7][8] Depending on the application, working conditions and the type of load and wear, different metallic, bimetallic or composite materials are used. [9][10][11][12] In the case of the manufacturing of building structures such as bridges, towers, industrial buildings and vehicles, particularly heavy vehicles such as trucks, trailers, semi-trailers, rail vehicles such wagons and tramcars, and also other utility vehicles and machines such as cranes, loaders, excavators, etc., the primary group of materials is structural steel.…”

“…The dynamic development of high-strength steels has led to the introduction of modern advanced and ultra-high-strength steels (AHSS and UHSS), characterized by an extremely high yield point and tensile strength over 1000 MPa. [1][2][3][4][5][6][7][8] Steels of this type achieve high mechanical properties thanks to a very fine-grained structure and/or a sophisticated phase composition like in the case of dual-phase (DP), complexphase (CP) and transformation-induced plasticity (TRIP) steels. 2,6,7 A significant group of the modern structural steels currently used in the industry includes thermomechanically rolled fine-grained microalloyed steel classified by the EN 10149-2 standard and also the quenched and tempered low-alloy steel classified by the EN 10025-6 standard.…”