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Comparison of Mechanical Properties of TMW Alloys, New Generation of Cast-and-Wrought Superalloys for Disk Applications

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Abstract

A new kind of Ni-Co–base disk alloys, named TMW alloys, has been developed on the basis of our innovative concept. Full-scale pancakes (440 mm in diameter and 65 mm in thickness) with an average grain size of about 10 μm were successfully manufactured from TMW alloys by a conventional cast-and-wrought (C&W) processing route. The property assessments of the pancakes indicate that TMW alloys are superior to C&W U720Li alloys in tensile strength and in creep resistance, while the performances of low-cycle fatigue (LCF) and fatigue crack growth (FCG) are comparative.

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The authors thank the New Energy and Industrial Technology Development Organization (NEDO) of Japan for providing financial support and permission to publish this work.

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Authors and Affiliations

  1. High Temperature Materials Center, National Institute for Materials Science, Ibaraki, 305-0047, Japan

    Y.F. Gu (Senior Research and Group Leader), C. Cui (Research Fellow), H. Harada (Senior Researcher and General Director), T. Yokokawa (Senior Researcher), J. Fujioka (Research Fellow), Y. Koizumi (Research Fellow) & T. Kobayashi (Research Fellow)

  2. Non-Ferrous Alloys Research and Technology Laboratory, Mitsubishi Materials Corporation, Kitamoto, Saitama, 364-0023, Japan

    T. Fukuda (Staff Member) & A. Mitsuhashi (Director)

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  1. Y.F. Gu
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  2. T. Fukuda
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  3. C. Cui
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  4. H. Harada
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  5. A. Mitsuhashi
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  6. T. Yokokawa
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  7. J. Fujioka
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  8. Y. Koizumi
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  9. T. Kobayashi
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Corresponding author

Correspondence to Y.F. Gu.

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Manuscript submitted May 8, 2009.

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Gu, Y., Fukuda, T., Cui, C. et al. Comparison of Mechanical Properties of TMW Alloys, New Generation of Cast-and-Wrought Superalloys for Disk Applications. Metall Mater Trans A 40, 3047–3050 (2009). https://doi.org/10.1007/s11661-009-0032-x

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