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Effect of Casting Method on Phase Composition of Heat-Resistant Austenitic Alloys Based on the Fe – 25% Cr – 35% Ni System

  • HEAT-RESISTANT ALLOYS
  • Published:
Metal Science and Heat Treatment Aims and scope

Methods of optical and electron microscopy and x-ray spectrum microanalysis are used to study the microstructure and the phase composition of alloy HP40NbTi produced by different casting methods. The effect of melt cooling rate within 1 – 1000 K/sec in the process of crystallization on chemical heterogeneity and quantitative proportion of chromium carbide to niobium carbide in the cast structure is investigated. It is shown that chemical heterogeneity of phases in the alloy is the highest when melt is cooled at a rate of 100 – 300 K/sec, which corresponds to crystallization conditions during welding and surfacing.

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  1. Here are subsequently through the text element content, apart from stipulated cases, is given in weight fractions expressed as a %.

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  1. Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia

    S. Yu. Kondrat’ev

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Correspondence to S. Yu. Kondrat’ev.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 3 – 9, April, 2022.

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Kondrat’ev, S.Y. Effect of Casting Method on Phase Composition of Heat-Resistant Austenitic Alloys Based on the Fe – 25% Cr – 35% Ni System. Met Sci Heat Treat 64, 191–197 (2022). https://doi.org/10.1007/s11041-022-00783-0

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