Conclusions
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1.
The solubility of aluminum in austenite in steel Kh12G14 increases with reduction of the solutioning temperature from 1250 to 1100° and depends on the nickel content of the steel. Raising the nickel content to 4.7% more than doubles the limit concentration of aluminum in austenite.
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2.
When steel Kh12G14 is alloyed with aluminum (up to 3%) and nickel (up to 4.7%) the steel has a high plasticity (δ and ψ<34%, an<10 kg-m/cm2 and retains these properties after 1000 h at 630°. The strengthening factor in elongation decreases with increasing nickel and aluminum concentrations. The yield strength depends on the concentration of δ-ferrite and amounts to 21–40 kg/mm2.
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Literature cited
O. A. Bannykh et al., Chromium-Manganese Steels with Aluminum [in Russian], Nauka, Moscow (1965).
S. S. Gorelik et al., X-Ray and Electron Diffraction Analysis [in Russian], Metallurgizdat, Moscow (1963).
Additional information
A. A. Baikov Institute of Metallurgy. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 2, pp. 37–40, February, 1971.
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Kartashova, L.I., Bannykh, O.A. & Zudin, I.F. Structure and properties of steel Kh12G14 with nickel and aluminum. Met Sci Heat Treat 13, 124–126 (1971). https://doi.org/10.1007/BF00650927
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DOI: https://doi.org/10.1007/BF00650927