Influence of nitrogen and copper on hardening of austenitic chromium-nickelmanganese stainless steel

Капуткина, Л. М.; Svyazhin, A. N.; Smarygina, I. V.; Kindop, V. E.

doi:10.17580/cisisr.2016.01.05

Cited by 8 publications

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“…[ 55 ] According to experimental data and computer, modeling of the laser welding of more thick sheets requires preheating. [ 56–58 ] The austenitic structure of new steels is stable not only at all testing temperatures [ 59 ] but also after thermal cycling according to the regime 400 cycles −100 to +100 °C. [ 60 ] Mechanical properties ( Table 8 ) as well as resistivity to general, pitting, and intercrystallite corrosion [ 61 ] are high for all tested steels.…”

Section: Laser Weldingmentioning

confidence: 99%

Nitrogen Steels and High‐Nitrogen Steels: Industrial Technologies and Properties

Svyazhin

Капуткина

Smarygina

et al. 2022

steel research int.

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Nitrogen pressure during melting can be a basis for the most general classification of steels alloyed by nitrogen. Nitrogen steels are made under normal pressure, and high‐nitrogen steels are made under pressure, being higher atmospheric in special units. Nitrogen, as well as carbon, strengthens and increases the thermal stability of austenite. The smaller size of the nitrogen ion compared with carbon results in smaller nitrides, lower surface energy and higher strengthening effect, and the ability to increase both the strength and corrosion resistance of austenite. Herein, the mechanisms of the influence of nitrogen on the properties of steel, the thermodynamics and kinetics of alloying with nitrogen, the critical concentration of nitrogen, and the influence of nitrogen on the properties of steels are considered. Examples of nitrogen and high‐nitrogen steels, including weld joints, steels with special properties, such as corrosion‐resistant steels in bioactive environments, bactericidal steel, and steels alloyed by C + N, are given.

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