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Effects of additional heat treatment on struc-ture and microhardness of high-strength steel shipbuilding
https://doi.org/10.22349/1994-6716-2023-115-3-07-16
Abstract
The paper studies kinetics of austenitic grain growth (when heating) and the peculiarities of phase transformations (when cooling) that depend on the manufacturing technology of high-strength steel. The method of vacuum etching has been applied to reveal former austenitic grain boundaries in steel. It is shown that the necessary homogeneous structure in morphology and dimensions of structural elements in martensitic steels is formed under the influence of additional quenching from furnace heating with tempering after quenching from rolling heating.
Keywords
low-carbon high-strength steel,
quenching with tempering,
quenching from rolling heating,
vacuum etching,
austenitic grain size,
phase transformations,
rolled sheets,
structure,
microhardness
Supporting agencies: Experimental studies were performed on the equipment of the Center for Collective Use “Composition, Structure and Properties of Structural and Functional Materials” of the NRC “Kurchatov Institute” – CRISM “Prometey”.
About the Authors
S. V. Korotovskaya
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
V. R. Nikitina
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
E. I. Khlusova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
E. A. Ushanova
NRC “Kurchatov Institute” – CRISM “Prometey”
Russian Federation
Russian Federation
49 Shpalernaya St, 191015 St Petersburg
References
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Review
For citations:
Korotovskaya S.V., Nikitina V.R., Khlusova E.I., Ushanova E.A. Effects of additional heat treatment on struc-ture and microhardness of high-strength steel shipbuilding. Voprosy Materialovedeniya. 2023;(3(115)):7-16. (In Russ.) https://doi.org/10.22349/1994-6716-2023-115-3-07-16
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