Choosing the Rational Heat Treatment Conditions for High-Strength Cold-Resistant Weldable Steel with Yield Strength of more than 600 N/mm2 | Zendy

П. П. Полецков | Zendy; А. С. Кузнецова | Zendy; О. А. Никитенко | Zendy

Open Access

Choosing the Rational Heat Treatment Conditions for High-Strength Cold-Resistant Weldable Steel with Yield Strength of more than 600 N/mm²

Author(s) -

П. П. Полецков,

А. С. Кузнецова,

О. А. Никитенко

Publication year - 2020

Publication title -

iop conference series materials science and engineering

Language(s) - English

Resource type - Journals

eISSN - 1757-899X

pISSN - 1757-8981

DOI - 10.1088/1757-899x/969/1/012013

Subject(s) - tempering , microstructure , materials science , metallurgy , quenching (fluorescence) , yield (engineering) , izod impact strength test , high strength steel , composite material , ultimate tensile strength , physics , quantum mechanics , fluorescence

Rational heat treatment conditions for the new weldable cold-resistant steel grade 20G2SMRA ensuring a guaranteed yield strength σ0,2 ⩾ 600 N/mm2 combined with the lowtemperature impact strength KCV-60 ⩾ 50 J/cm2 have been searched. The effect of various quenching and tempering conditions on the steel microstructure parameters, hardness, and impact strength at a temperature of -60 °C has been studied. The dependencies of the microstructure parameters, hardness (HV1), and impact strength (KCV-60) on the quenching and subsequent tempering temperature are represented. Rational heat treatment conditions have been found for a new weldable cold-resistant steel with high yield strength.

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