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Automotive Application of Advanced Superalloys

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Abstract

Based on the testing reported here, a new Ni-based superalloy has been adopted for use in Mazda RX-7 heat-resistant turbochargers. The new alloy exhibits a high temperature stability of the γ phase, resisting the initial stage of creep rupture. Casting parameters and chemistries are varied to produce a directionally solidified columnar structure, which eliminates internal grain boundary rupture sites. The Mazda super-high temperature turbocharger was used to achieve a world speed record (GT-C class) of 238.442 mph at Bonneville, Utah, last August.

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References

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Authors and Affiliations

  1. Technical Research Center of the Mazda Motor Corporation, Japan

    Masashi Yoritaka (senior research engineer), Yukio Yamamoto (research engineer) & Yasuaki Hasegawa (research engineer)

  2. Development Department at the Sawa Works of Hitachi Ltd., Japan

    Tomio Hokari (engineer)

Authors
  1. Masashi Yoritaka
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  2. Yukio Yamamoto
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  3. Yasuaki Hasegawa
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  4. Tomio Hokari
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Additional information

Masashi Yoritaka received his degree in metallurgy from the Kyoto University in 1965.

Yukio Yamamoto received his degree in the plasticity of metallic materials from Hiroshima University in 1979.

Yasuaki Hasegawa received his degree in metallurgy from Tohoku University in 1983.

Tomio Hokari received his degree in precision engineering from Ibaraki University in 1971.

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Yoritaka, M., Yamamoto, Y., Hasegawa, Y. et al. Automotive Application of Advanced Superalloys. JOM 38, 20–22 (1986). https://doi.org/10.1007/BF03257589

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  • DOI: https://doi.org/10.1007/BF03257589

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