Change in Microstructure and Mechanical Properties with Carbon Content in High Cr and High W Heat Resisting Ferritic Steels

  1. Prof. Dr. P. Neumann5,
  2. Dr. D. Allen6 and
  3. Prof. Dr. E. Teuckhoff7
  1. Y. Murata1,
  2. M. Morinaga1,
  3. R. Hashizume2,
  4. K. Takami3,
  5. K. Kawamura3,
  6. T. Azuma4,
  7. Y. Tanaka4 and
  8. T. Ishiguro4

Published Online: 5 JAN 2006

DOI: 10.1002/3527606181.ch62

Steels and Materials for Power Plants, Volume 7

Steels and Materials for Power Plants, Volume 7

How to Cite

Murata, Y., Morinaga, M., Hashizume, R., Takami, K., Kawamura, K., Azuma, T., Tanaka, Y. and Ishiguro, T. (2000) Change in Microstructure and Mechanical Properties with Carbon Content in High Cr and High W Heat Resisting Ferritic Steels, 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.ch62

Editor Information

  1. 5

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

  2. 6

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

  3. 7

    Siemens AG, Postfach 3240, 91050 Erlangen, Germany

Author Information

  1. 1

    Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

  2. 2

    Materials Research Section, Technical Research Center, The Kansai Electric Power Company Inc., 11-20 Nakoji 3-chome, Amagasaki 661-0974, Japan

  3. 3

    Graduate Student of Nagoya University, Japan

  4. 4

    Muroran Research Laboratory, The Japan Steel Works, Ltd., 4 Chatsu-machi, Muroran 051-0006, Japan

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;
  • change in microstructure with carbon content;
  • change in mechanical properties carbon content;
  • high Cr and high W heat resisting ferritic steels

Summary

The microstructure and mechanical properties are dependent largely on the carbon content in high Cr and high W ferritic steels. For example, the tensile strength at 873K has a tendency to increase with decreasing carbon content. However, a certain amount of C is still needed to be added in order lengthen the creep rupture life in a lower stress condition. Also, both the FATT and the USE increase with decreasing carbon content, so that it may be said that as the carbon content decreases, the toughness decreases but instead the ductility increases in these steels.