On the Creep Crack Growth Behavior of INCONEL 706

  1. Prof. Dr. P. Neumann2,
  2. Dr. D. Allen3 and
  3. Prof. Dr. E. Teuckhoff4
  1. Steffen Müller and
  2. Joachim Rösler

Published Online: 5 JAN 2006

DOI: 10.1002/3527606181.ch61

Steels and Materials for Power Plants, Volume 7

Steels and Materials for Power Plants, Volume 7

How to Cite

Müller, S. and Rösler, J. (2000) On the Creep Crack Growth Behavior of INCONEL 706, in Steels and Materials for Power Plants, Volume 7 (eds P. Neumann, D. Allen and E. Teuckhoff), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606181.ch61

Editor Information

  1. 2

    Max-Planck-Institut für Eisenforschung, Max-Planck-Str. 1, 40237 Düsseldorf, Germany

  2. 3

    ABB Asltom Power UK Ltd., Cambridge Road, Whetstone, Leicester LE9 GLH, United Kingdom

  3. 4

    Siemens AG, Postfach 3240, 91050 Erlangen, Germany

Author Information

  1. Institut für Werkstoffe, D-38016 Braunschweig, Germany

Publication History

  1. Published Online: 5 JAN 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301959

Online ISBN: 9783527606184

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Keywords:

  • steels for power plants;
  • materials for power plant;
  • creep crack growth behavior;
  • INCONEL 706

Summary

In the study presented here it is shown that conventional stabilizing heat treatment, recommended by the supplier [1] for improved creep rupture properties, not necessarily leads to acceptable results and that slight heat treatment modifications can have dramatic effects on the alloy's creep crack growth resistance. In particular, cooling rate between heat treatment steps is shown to play a significant role. These effects are interpreted in terms of the precipitation sequence which influences type and morphology of η phase at grain boundaries. Based on these results, microstructure and heat treatment requirements for optimal SAGBO resistance of IN706 are outlined.