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The Role of Carbide Phases in the Secondary Recrystallization of Nickel-Base ODS-Superalloys PUBLIC ACCESS

[+] Author Affiliations
K. Lempenauer, E. Arzt

Max-Planck-Institut für Metallforschung, Stuttgart, FRG

Paper No. 91-GT-404, pp. V005T12A014; 6 pages
doi:10.1115/91-GT-404
From:
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7902-3
  • Copyright © 1991 by ASME

abstract

In ODS nickel-base alloys with high γ′-content (e.g. MA760) the rate of heating to the recrystallization temperature plays an important role for the success of the recrystallization treatment. Previous results (Jongenburger et al., 1990) revealed the existence of a heating rate window for secondary recrystallization. While the lower limit of this window (Ṫmin) is well understood, an attempt is made in this paper to explain the upper limit (Ṫmax) by the influence of carbide phases. Furthermore it is shown that carbide phases may also influence the incipient melting temperature and consequently the width of the temperature window for successful secondary recrystallization.

Copyright © 1991 by ASME
This article is only available in the PDF format.

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