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Efferct of the μ-phase on the properties of superhigh-temperature derofmable nickel alloy KhN60KVYuMB

  • High-Temperature Steels
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Metal Science and Heat Treatment Aims and scope

Abstract

One of the requirements imposed on high-temperature nickel alloys for long-term operation under high temperatures and stresses is structural stability, which ensures constant properties during operation of parts. It is known that the main strengthening phase of nickel alloys is a γ′-phase of the type (Ni, Cr)3(Al, N) or (Ni, Cr)3(Al, Ti, Nb), which may amount to 50% in deformable nickel alloys. In addition, these alloys contain a certain amount of carbides, borides, and carbonitrides (up to 3 wt. %). An increase in the content of alloying elements in high-temperature alloys may cause formation of undesirable TCP-phases in their structure. For example, at high contents of molybdenum and tungsten a thin lamellar p-phase (Ni, Co, Fe)7(Mo, W)6 is segregated. The authors investigated the effect of the μ-phase on the set of chemical properties of industrial alloy KhN60KVYuMB (pressed rods 105 mm in diameter).

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Authors and Affiliations

  1. TsNIITmash Research and Production Association, Russia

    M. A. Filatova & V. S. Sudakov

Authors
  1. M. A. Filatova
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  2. V. S. Sudakov
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Translated from Metailovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 15–19, September, 1995.

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Filatova, M.A., Sudakov, V.S. Efferct of the μ-phase on the properties of superhigh-temperature derofmable nickel alloy KhN60KVYuMB. Met Sci Heat Treat 37, 361–364 (1995). https://doi.org/10.1007/BF01156810

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  • DOI: https://doi.org/10.1007/BF01156810

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