Structural nonuniformity: Impact on the cold resistance of low carbon microalloyed steel for building cоnstructions

Арсенкин, А. М.; Григорович, К. В.; Odesskii, P. D.; Tabakov, Yaroslav I.; Железный, М. В.

doi:10.1016/j.rinma.2020.100141

Cited by 1 publication

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“…Such treatment contributes to an increase in strength and toughness, while forming a special structure of steel [ 10 , 11 ]. The characteristic of combined high strength and ductility is achieved by low carbon content, optimum alloying, and cold rolling, which results in fine-dispersed or even nanoscale structures [ 12 ]. The stability of steel structures under operational loads can be achieved by technological measures during melting, rolling, thermal, and mechanical processing of rolled steel sheets, providing a reduction in the proportion and size of non-metallic inclusions, grain refinement, and obtaining structures with a chain morphology [ 13 ].…”

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confidence: 99%

Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling

et al. 2021

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The study of the formation of microstructural features of low-alloy bainite-martensitic steel 09CrNi2MoCu are of particular interest in additive technologies. In this paper, we present a study of cold-rolled samples after direct laser deposition (DLD). We investigated deposited samples after cold plastic deformation with different degrees of deformation compression (50, 60 and 70%) of samples from steel 09CrNi2MoCu. The microstructure and mechanical properties of samples in the initial state and after heat treatment (HT) were analyzed and compared with the samples obtained after cold rolling. The effect on static tensile strength and impact toughness at −40 °C in the initial state and after cold rolling was investigated. The mechanical properties and characteristics of fracture in different directions were determined. Optimal modes and the degree of cold rolling deformation compression required to obtain balanced mechanical properties of samples obtained by additive method were determined. The influence of structural components and martensitic-austenitic phase on the microhardness and mechanical properties of the obtained samples was determined.

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