Microstructure and Mechanical Properties of Power Beam Weld Superalloys during Cyclic Deformation

  1. Dr. P. J. Winkler
  1. Thomas Spirowski,
  2. Sabine Weiß and
  3. Alfons Fischer

Published Online: 23 DEC 2005

DOI: 10.1002/3527606025.ch36

Materials for Transportation Technology, Volume 1

Materials for Transportation Technology, Volume 1

How to Cite

Spirowski, T., Weiß, S. and Fischer, A. (2000) Microstructure and Mechanical Properties of Power Beam Weld Superalloys during Cyclic Deformation, in Materials for Transportation Technology, Volume 1 (ed P. J. Winkler), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606025.ch36

Editor Information

  1. DaimlerChrysler AG, Forschung und Technologie, Postfach 800 465, 81663 München, Germany; Tel.: 089–607 22393; Fax: 089–607 28627

Author Information

  1. Universität GH Essen, Werkstofftechnik, Essen, Germany

Publication History

  1. Published Online: 23 DEC 2005
  2. Published Print: 20 APR 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301249

Online ISBN: 9783527606023

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Keywords:

  • transportation technology;
  • materials;
  • aerospace applications;
  • power beam weld superalloys;
  • cycling deformation;
  • microstructure;
  • mechanical properties

Summary

At elevated temperatures nickel- and iron-based superalloys are preferently used due to their excellent high temperature properties. Typical applications are power stations and components used in aerospace industry. These highly alloyed precipitation hardenable materials undergo conspicuous microstructural changes during welding like cracks in the heat affected zone (HAZ), microfissuring and base metal degradation. These metallurgical difficulties can, however, be decreased by power beam welding processes. These welding processes result in lower component distortion and a high joint quality. In order to optimise the welding conditions it is necessary to understand the relationships between microstructure and mechanical properties of the power beam welded superalloy joints. In the current study the microstructure and the cyclic properties of laser beam welds of the nickel-based NiCr19Nb5Mo3 (INCONEL 718) and the X5NiCrTi26-15 steel (A-286) were investigated. Both materials are typical highly alloyed precipitation hardened materials.