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
EditorsMark Hardy, Eric Huron, Uwe Glatzel, Brian Griffin, Beth Lewis, Cathie Rae, Venkat Seetharaman, Sammy Tin
PublisherMinerals, Metals and Materials Society
Pages591-599
Number of pages9
ISBN (Electronic)9781118996669
DOIs
Publication statusPublished - 2016
Event13th International Symposium on Superalloys, SUPERALLOYS 2016 - Seven Springs, United States
Duration: 2016 Sep 112016 Sep 15

Publication series

NameProceedings of the International Symposium on Superalloys
Volume2016-January

Other

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

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

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  • 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 M. Hardy, E. Huron, U. Glatzel, B. Griffin, B. Lewis, C. Rae, V. Seetharaman, & S. Tin (Eds.), SUPERALLOYS 2016 - Proceedings of the 13th International Symposium on Superalloys (pp. 591-599). (Proceedings of the International Symposium on Superalloys; Vol. 2016-January). Minerals, Metals and Materials Society. https://doi.org/10.1002/9781119075646.ch63