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Metallurgist
Published in: Metallurgist 7-8/2011

01-11-2011

Effect of heat treatment on mechanical properties and structure of high-strength pipe steels with a ferrite-bainite structure

Authors: M. Yu. Matrosov, O. P. Talanov, I. V. Lyasotskii, D. L. Dyakonov, E. I. Khlusova, V. V. Orlov, A. M. Korchagin, D. S. Tsvetkov, S. D. Popova

Published in: Metallurgist | Issue 7-8/2011

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Abstract

The effect of heat treatment on mechanical properties and microstructure of high-strength low-alloy ferrite-bainite pipe steels is studied. Specimens are heated in a laboratory furnace up to a temperature in the range 100–850°C. Dependences for the change in mechanical properties on heating temperature and the main features of steel structure are determined. TEM is used to study excess phase precipitation, including Nb and V carbonitrides, during heating. Unfavorable temperature ranges are determined for heating pipe steels with a ferrite-bainite structure. The results obtained may be used in industrial production and during development of new technology for thermomechanical treatment.
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Literature
1.
M. Murata, N. Doi, I. Tirada, T. Khaara, and T. Inue, “Planning and production of high-strength linear pipes of strength class K65 for the Bovanenkovo-Ukhta project,” Nauka Tekhn. Gaz. Prom., No. 1, 88–91 (2009).
2.
N. Yu. Matrosov, Yu. D. Morozov, et al., “Development and industrial approval of steel production for pipes of strength class K65 (Kh80) for the Bovanenkovo–Ukhta gas pipeline,” Probl. Cher. Met. Mater., No. 3, 33–41 (2010).
3.
Yu. I. Matrosov, I. V. Ganoshenko, O. A. Bagnet, and T. Yu. Ivanova, “Possibilities of increasing the yield strength of sheets of high-strength pipe steels Kh70 and Kh80,” Stal, No. 2, 74–78 (2005).
4.
Yu. G. Morozov, S. Yu. Nastich, A. M. Korchagin, et al., “Structure and properties of strips for large diameter pipes made of steels of strength category Kh80–Kh100,” Metallurg, No. 3, 43–49 (2009).
5.
K. W. Andrew, “Empirical formula for the calculation of some transformation temperatures,” JISI, 203, July, 721–727 (1965).
6.
F. S. LePera, “Improved etching technique for determination of percent martensite in high-strength dual phase steels,” J. Metallography, No. 12, 263–268 (1979).CrossRef
Metadata
Title
Effect of heat treatment on mechanical properties and structure of high-strength pipe steels with a ferrite-bainite structure
Authors
M. Yu. Matrosov
O. P. Talanov
I. V. Lyasotskii
D. L. Dyakonov
E. I. Khlusova
V. V. Orlov
A. M. Korchagin
D. S. Tsvetkov
S. D. Popova
Publication date
01-11-2011
Publisher
Springer US
Published in
Metallurgist / Issue 7-8/2011
Print ISSN: 0026-0894
Electronic ISSN: 1573-8892
DOI
https://doi.org/10.1007/s11015-011-9457-8

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