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Alternative title: Development of novel Ni-Co base superalloy for HP disk applications

Description:

Aiming to further improve the temperature capability of superalloys for high-pressure disks of aircraft engines, we developed a new Ni-Co base superalloys by redesigning based on a combination of turbine blade superalloy, TM-47, with a Co-C3Ti alloy, both of which possess a γ-γʹ two-phase structure. As a result of investigations using single crystal model alloys and powder metallurgy processed alloys, it was confirmed that the addition of Co-12.5 wt.% Ti to TM-47 improves creep properties, powder manufacturability, phase stability, and high-temperature strength. In particular, it was demonstrated that TM-47 M2 (20 wt.% of Co-12.5 wt.% Ti added to TM-47) exhibits superior 0.2% creep properties compared to conventional materials.

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• In Copyright
  

Keyword: HPディスク, Ni-Co基超合金, 粉末冶金, 高温強度, クリープ

Date published: 2024-10-23

Publisher: 公益社団法人　日本ガスタービン学会

Journal:

Funding:

• 安全保障技術研究推進制度 JPJ004596

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5209

First published URL: https://www.gtsj.or.jp/html_calender/teiki52-takamatu.html

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Updated at: 2025-04-10 21:47:45 +0900

Published on MDR: 2024-12-24 13:58:55 +0900