A concept is developed for assessing the stability of untransformed austenite entering the martensite-austenite component of a bainitic structure, which is determined by the action of hydrostatic stresses caused by difference in the specific volumes of the austenite and ferrite phases. Relations describing the thermal stability of austenite in the M/A phase are derived. The former is affected by the volume fraction of the phase, the fineness, the size distribution, and the difference in the coefficients of thermal expansion of the austenite and of the ferrite component of the bainite.
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References
Quantitative Structure-Property Relationships for Complex Bainitic Microstructures, Commission of European Communities ECSC Sponsored Research Project, Swedish Institute for Metals Research, SIMR Report IM-2004-247.07, 157 p.
L. Wang and J. G. Speer, “Quenching and partitioning steel heat treatment,” Metallorg. Microstr. Anal., 2, 268 – 281 (2013).
R. M. Denys, “Toughness and tensile properties requirements for defect acceptance in strain-based design,” in: Rep. Int. Seminar “Advanced Steels for Gas and Oil Pipes, Problems and Perspectives” [in Russian], Metallurgizdat, Moscow (2006), pp. 69 – 75.
D. B. Lillig, “The First (2007) ISOPE strain-based design symposium – Areview,” in: Proc. 18th 2008 Offshore and Polar Engineering Conf. (2008), pp. 1 – 12.
T. Hara, Y. Shinohara, Y. Terada, et al., “Development of high deformable high strain line pipe, suitable for strain-based design,” in: Proc. Pipeline Conf. Ostend, 12 – 14 Oct., 2009, Paper No. Ostend 2009-014.
H. Sun, S. An, D. Meng, and D. Hu, “Influence of cooling conditions on microstructure and tensile properties of X80 high deformability line pipe steel,” in: Proc. HSLP 2010 Int. Seminar on Application of High Strength Line Pipe, Xi’an, China (2010), pp. 135 – 139.
D. Wu and Z. Li, “Effect of thermomechanical controlled processing on the microstructure and mechanical properties of Fe – C – Mn – Si multiphase steels,” ISIJ Int., 46(7), 1059 – 1066, Jan. 2006, DOI: 10.2355_isijinternational.46.1059.
I. Nobuyuki, E. Shingeru, and K. Joe, “High performance UOE line-pipes,” JFE Tech. Rept., No. 7, Jan, 2006, 32 p.
J. Y. Yoo, S. H. Chon, and D. H. Seo, “Microstructure and mechanical properties of X80 linepipe steel with high strain aging resistance,” in: Proc. Pipeline Conf. Ostend, 12 – 14 Oct. 2009, Paper No. Ostend 2009-020.
N. G. Kolbasnikov, “Effect of stresses and plastic strain on the behavior of martensitic transformations,” Metalloobrabotka, No. 6, 30 – 36 (2001).
N. G. Kolbasnikov and S. Yu. Kondrat’ev, Structure, Entropy. Phase Transformations and Properties of Metals [in Russian], Izd. St. Peterburg. Gos. Polytekh. Univ. (2006), 363 p.
M. Y. Sherif, Mateo C. Garcia, T. Sourmail, and H. K. D. H. Bhadeshia, “Stability of retained austenite in TRIP-assisted steels,” Mater. Sci. Technol., 20, 319 – 322 (2004).
J. M. Reichert, T. Garcin, M. Militzer, andW. J. Poole, “Formation of martensite/austenite (m/a) in X80 line pipe steel,” in: Proc. 2012 9th Int. Pipeline Conf. IPC2012, Sept. 24 – 28, 2012, Calgary, Alberta, Canada, IPC2012-90465.
M. G. Oknov, “Variation of the volume of metals under quenching,” Zh. Russ. Metallurg. Obshch., Part 2, 116 – 121 (1911).
S. Yu. Kondrat’ev, O. G. Zotov, G. Yu. Yaroslavskii, et al., “Investigation of interrelationship between damping capacity and mechanical properties as well as morphology of martensite in alloys with reversible martensite transformation,” Probl. Prochn., 14B(3), 79 – 82 (1983).
S. Yu. Kondrat’ev, G. Ya. Yaroslavskii, and B. S. Chaikovskii, “Classification of high-damping metallic materials,” Strength Mater., 18(10), 1325 – 1329 (1986).
V. A. Khokhlov, A. I. Potekaev, and S. V. Galsanov, “Astudy of the properties of titanium nickelide initiated by high hydrostatic pressure,” Izv. Tomsk. Politekh. Univ., 322(2), 130 – 134 (2093).
B. I. Beresnev and I. Ya. Georgieva, “Effect of hydroextrusion on mechanical properties of trip-steels,” Metalloved. Term. Obrab. Met., No. 3, 5 – 9 (1976).
G. V. Samsonov (ed.), Properties of Elements, Pt. 1. Physical Properties [in Russian], Metallurgiya, Moscow (1976), 600 p.
A. I. Rudskoy and N. G. Kolbasnikov, “Digital twins of the processes of thermomechanical treatment of steel,” Metalloved. Term. Obrab. Met., No. 1, 4 – 11 (2020).
A. I. Rudskoy, Scientific Foundations of Control of Structure and Properties of Steels in Processes of Thermomechanical Treatment [in Russian], Izd. RAN, Moscow (2019), 276 p.
A. P. Babichev, N. A. Babushkina, A. M. Bratkovskii, et al., Physical Quantities, A Reference Book [in Russian], Énergoatomizdat, Moscow (1991), 1232 p.
V. L. Kolmogorov, Stresses, Deformations, Fracture [in Russian], Metallurgiya, Moscow (1979), 229 p.
V. M. Finkel, Physical Foundations of Deceleration of Fracture [in Russian], Metallurgiya, Moscow (1977), 360 p.
The work has been performed with support of the RNF Grant No. 19-19-00281.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 3 – 9, February, 2021.
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Kolbasnikov, N.G., Sakharov, M.S., Kuzin, S.A. et al. Stability of Untransformed Austenite in M/A Phase of Bainitic Structure of Low-Carbon Steel. Met Sci Heat Treat 63, 63–69 (2021). https://doi.org/10.1007/s11041-021-00648-y
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DOI: https://doi.org/10.1007/s11041-021-00648-y