Abstract
This work studies the effect of single and double tempering at various temperatures on the mechanical properties of a new corrosion-resistant high-chromium (13% Cr) economically alloyed pipe steel quenched from an intercritical temperature interval. The existence of a maximum of impact toughness and minimum of yield strength at equal temperatures on the dependences of these quantities on the tempering temperature is shown. The temperature of the extrema is supposedly determined by the position of the “nose” of the C‑shaped temperature diagram of the precipitation of (Cr,Fe)23C6 carbide particles from martensite during tempering. It is shown that the position of the extrema does not depend on the duration of the first general tempering.
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Makovetskii, A.N., Mirzaev, D.A., Yusupova, L.I. et al. Changes in the Mechanical Properties of High-Chromium Economically Alloyed Pipe Steel Depending on Tempering Conditions after Intercritical Quenching. Phys. Metals Metallogr. 121, 398–403 (2020). https://doi.org/10.1134/S0031918X20040080
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DOI: https://doi.org/10.1134/S0031918X20040080