Influence of high-temperature thermomechanical treatment on the structure and properties of high-strength corrosion-resistant steel of grade 17H13N4К6SАМ3ch

Shestakov I.I., Voznesenskaya N.M., Tonysheva О.А.
UDC
620.1:669.14.018.8
DOI
10.18577/2307-6046-2016-0-6-2-2
Article PDF (Russian) (621.71 KB)
How to cite
Shestakov I.I., Voznesenskaya N.M., Tonysheva О.А. Influence of high-temperature thermomechanical treatment on the structure and properties of high-strength corrosion-resistant steel of grade 17H13N4К6SАМ3ch // Proceedings of VIAM. 2016. No. 6. DOI: 10.18577/2307-6046-2016-0-6-2-2. URL: https://test.viam.ru/en/journal/2016/6/2
Keywords
high-temperature thermomechanical treatment, high-strength corrosion-resistant steel, grain size, retained austenite, mechanical properties.
Abstract

Influence of high-temperature thermomechanical treatment on structure and mechanical properties of high-strength corrosion-resistant steel of the grade 17H13N4К6SАМ3ch microalloyed by rare-earth metals is investigated. It is shown that high-temperature thermomechanical treatment at an optimum mode reduces average grain size in ~5 times in comparison with standard heat treatment. The content of retained austenite thus increases from 12 to 17%. Test results of mechanical properties of samples after high-temperature thermomechanical treatment have shown a noticeable gain of yield point, unit elongation and reduction of area, impact toughness (of KCU and KCV) in comparison with properties after standard heat treatment. Application of high-temperature thermomechanical processing allows to implement the effect of fine grain, developed substructure and positive influence of retained austenite on strength and plastic properties of steel 17H13N4К6SАМ3ch. Work is executed within implementatio

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