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Physics of Metals and Metallography

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01.10.2021 | STRENGTH AND PLASTICITY

Microstructure and Impact Toughness of High-Strength Low-Alloy Steel after Tempforming

verfasst von: A. S. Dolzhenko, P. D. Dolzhenko, A. N. Belyakov, R. O. Kaibyshev

Erschienen in: Physics of Metals and Metallography | Ausgabe 10/2021

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Abstract

The effects of temperature and degree of tempforming deformation on the microstructure and impact toughness of high-strength low-alloy 25KhGMT steel have been considered. Tempforming forms a lamellar microstructure composed of grains and subgrains that are strongly elongated along the rolling direction. The average size of the grain section is 570–790 nm. Deformation texture includes 〈001〉 || ND and 〈111〉 || ND fibers. Tempforming increases the fracture work of this steel at lower test temperatures (KV_–40°С ≥ 360 J) due to the delamination of the specimen perpendicular to the impact direction, which prevents crack propagation towards the direction of the impact.

Vorheriger Artikel Influence of Process Parameters and Reinforcements on Aluminum Hybrid Composites Developed by Powder Metallurgy Process

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Titel: Microstructure and Impact Toughness of High-Strength Low-Alloy Steel after Tempforming
verfasst von: A. S. Dolzhenko
P. D. Dolzhenko
A. N. Belyakov
R. O. Kaibyshev
Publikationsdatum: 01.10.2021
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 10/2021
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X21100021

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