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Joining of ODS-Superalloys PUBLIC ACCESS

[+] Author Affiliations
H. D. Hedrich

Daimler-Benz AG Stuttgart, FRG

H. G. Mayer, G. Haufler, M. Kopf

IKE-University of Stuttgart, FRG

N. Reheis

Metallwerk Plansee GmbH Reutte, Austria

Paper No. 91-GT-411, pp. V005T12A016; 5 pages
doi:10.1115/91-GT-411
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

A stable oxide dispersoid distribution in the metal matrix, a textured orientation and a coarse grain structure with high grain aspect ratio are characteristics of ODS-super-alloys. This grain structure is the reason for enhanced mechanical properties, oxidation and corrosion resistance at high temperature unobtainable in other superalloys. Therefore ODS-alloys are promising materials for advanced combustion engines and energy generation units. The ferritic ODS-alloy permits operating temperatures up to 1350°C.

In order to produce complex and high temperature resistant components suitable joining methods are technically and economically significant. This paper presents first results of investigations of joining the new iron-base-ODS-alloy PM 2000 developed by Metallwerk Plansee. The following joining techniques are under investigation: gas tungsten-arc welding, laser beam welding and electron beam welding as fusion welding techniques and diffusion bonding as a solid state joining technique. Joining is done in recrystallized and in unrecrystallized condition. Pre- and post-heat treatment procedures were applied and tested to improve the joint strength.

Copyright © 1991 by ASME
Topics: Joining , Superalloys
This article is only available in the PDF format.

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