Formation of Microstructure and Properties During Isothermal Treatment of Aircraft Building Steel

Features of the microstructure formation in steel 30Cr2MnSiNi2WMo (VL-1) are studied with various heat treatment regimes: stepwise quenching at temperature below M s (quenching and partitioning), and isothermal quenching for bainite. It is shown that the calculated optimum temperature of stepwise qu...

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Bibliographic Details
Published in:Metallurgist (New York) 2022, Vol.65 (9-10), p.1008-1019
Main Authors: Maisuradze, M. V., Yudin, Yu. V., Kuklina, A. A., Lebedev, D. I.
Format: Article
Language:English
Subjects:
Aircraft construction materials
Bainite
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium steels
Heat treatment
Isothermal treatment
Materials Science
Mechanical properties
Metallic Materials
Microstructure
Quenching
Retained austenite
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Summary:Features of the microstructure formation in steel 30Cr2MnSiNi2WMo (VL-1) are studied with various heat treatment regimes: stepwise quenching at temperature below M s (quenching and partitioning), and isothermal quenching for bainite. It is shown that the calculated optimum temperature of stepwise quenching does not provide the predicted amount of stable retained austenite in the test steel microstructure. Mechanical properties of steel 30Cr2MnSiNi2WMo after implementation of stepwise and isothermal quenching are determined. It is established that after isothermal heat treatment the steel studied exhibits reduced viscoplastic properties compared with a condition after bulk hardening and tempering.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-022-01241-1