Welded joints of medium-alloy steels XJY750 and 40KhN2MA are studied in the initial condition and after different variants of annealing. Special features of the phase transformations occurring in the welded steels are determined. Optimum modes of annealing are recommended for the studied welded joints of drill pipes, which provide a high level of mechanical properties including the case of impact loading.
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V. G. Sorokin (ed.), Grades of Steels and Alloys [in Russian], Intermet Engineering, Moscow (2003), 680 p.
L. A. Lachinyan, Operation of Drill Strings [in Russian], Nedra, Moscow (1992), 214 p.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 18 – 24, October, 2017.
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Priymak, E.Y., Stepanchukova, A.V., Bashirova, E.V. et al. Special Features of Induction Annealing of Friction Stir Welded Joints of Medium-Alloy Steels. Met Sci Heat Treat 59, 624–629 (2018). https://doi.org/10.1007/s11041-018-0201-x
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DOI: https://doi.org/10.1007/s11041-018-0201-x