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Erschienen in: Metallurgist 5-6/2019

18.10.2019

Study of the Effect of Composition and Thermal Deformation Treatment on Properties of Ferritic Steels Microalloyed with Titanium and Niobium. Part 1. Microstructure Characteristics

verfasst von: A. V. Koldaev, A. I. Zaitsev, I. A. Krasnyanskaya, D. L. D’yakonov

Erschienen in: Metallurgist | Ausgabe 5-6/2019

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Abstract

The effect of composition and thermal deformation processing (finishing temperature of rolling and coiling, cooling rate after rolling) parameters on the mechanical properties and structure of advanced Ti, Mo micro-alloyed structural (automobile sheet) ferritic steels is studied. It is established that the strength characteristics of steel increase regularly with increasing Ti content within appropriate limits and additional microalloying with molybdenum. The resultant structural state is primarily determined by the cooling rate after steel hot rolling. At relatively low values of 10–15 °C/sec polygonal ferrite is formed, and on increasing up to 30 °C/sec formation of a high dislocation acicular ferrite is observed. The expediency of reducing carbon content to 0.04–0.06 wt.% is demonstrated.

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Metadaten
Titel
Study of the Effect of Composition and Thermal Deformation Treatment on Properties of Ferritic Steels Microalloyed with Titanium and Niobium. Part 1. Microstructure Characteristics
verfasst von
A. V. Koldaev
A. I. Zaitsev
I. A. Krasnyanskaya
D. L. D’yakonov
Publikationsdatum
18.10.2019
Verlag
Springer US
Erschienen in
Metallurgist / Ausgabe 5-6/2019
Print ISSN: 0026-0894
Elektronische ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-019-00849-0

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