High temperature properties of a single crystal superalloy PWA1484 directly recycled after turbine blade use

Satoshi Utada, Yuichiro Joh, Makoto Osawa, Tadaharu Yokokawa, Toshiharu Kobayashi, Kyoko Kawagishi, Shinsuke Suzuki, Hiroshi Harada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    To achieve drastic cost reduction and stable supply of Ni-base single crystal superalloy turbine blades, we proposed direct recycle method that includes collecting of the components, remelting and refining in the CaO crucible, adjusting composition using the °Counter Alloying Method", and recasting into single crystals. In this study, used and scrapped Ni-base single crystal superalloy PWA1484 turbine blades were directly recycled and the properties of the recycled materials were evaluated by performing high temperature tests such as creep, cyclic oxidation, and high cycle fatigue. The recycled material showed properties equal to or better than the genuine ingot material.

    Original languageEnglish
    Title of host publicationSUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys
    PublisherMinerals, Metals and Materials Society
    Pages591-599
    Number of pages9
    Volume2016-January
    ISBN (Electronic)9781118996669
    Publication statusPublished - 2016
    Event13th International Symposium on Superalloys, SUPERALLOYS 2016 - Seven Springs, United States
    Duration: 2016 Sep 112016 Sep 15

    Other

    Other13th International Symposium on Superalloys, SUPERALLOYS 2016
    CountryUnited States
    CitySeven Springs
    Period16/9/1116/9/15

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    Keywords

    • Creep
    • Desulfurization
    • Manufacturing
    • Ni-base superalloy
    • Oxidation
    • PWA1484
    • Recycle
    • Refining

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Utada, S., Joh, Y., Osawa, M., Yokokawa, T., Kobayashi, T., Kawagishi, K., Suzuki, S., & Harada, H. (2016). High temperature properties of a single crystal superalloy PWA1484 directly recycled after turbine blade use. In SUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys (Vol. 2016-January, pp. 591-599). Minerals, Metals and Materials Society.