Field-Assisted Sintering of Nickel-Based Superalloy Powder for High-Temperature Hybrid Turbine Disc Applications

Charis I. Lin, Sebastian Niuman, Namiko Yamamoto, Anil Kulkarni, Jogender Singh

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

Abstract

Turbine discs are currently made of nickel-based superalloys, known for their high strength and creep resistance at high temperatures. Hybrid or dual-microstructure turbine discs allow for significant weight savings, but current methods of joining dissimilar nickel-based superalloys such as friction welding exhibit a heat-affected zone and localized melting at the interface, leading to weak bonding. Here, we show that field-assisted sintering technology may be used to sinter the nickel-based superalloy powder CM247LC to high relative density, and the effect of sintering temperature and time on porosity, grain size, and mechanical properties of CM247LC is investigated. We also show that the same technology may be used to form hybrid discs with a solid Inconel 718 core and a powder-sintered CM247LC rim without the formation of a heat-affected zone at the interface. Two different joining angles between the two materials in the hybrid discs are explored, and preliminary results suggest that the joining angle does not affect the tensile properties of the material interface.

Original languageEnglish (US)
Title of host publication10th International Symposium on High-Temperature Metallurgical Processing, 2019
EditorsRafael Padilla, Onuralp Yücel, Dean Gregurek, Tao Jiang, Zhiwei Peng, Baojun Zhao, Jerome P. Downey, Ender Keskinkilic, Jiann-Yang Hwang
PublisherSpringer International Publishing
Pages175-187
Number of pages13
ISBN (Print)9783030059545
DOIs
StatePublished - Jan 1 2019
Event10th International Symposium on High-Temperature Metallurgical Processing held at the TMS Annual Meeting and Exhibition, 2019 - San Antonio, United States
Duration: Mar 10 2019Mar 14 2019

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference10th International Symposium on High-Temperature Metallurgical Processing held at the TMS Annual Meeting and Exhibition, 2019
CountryUnited States
CitySan Antonio
Period3/10/193/14/19

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Field-Assisted Sintering of Nickel-Based Superalloy Powder for High-Temperature Hybrid Turbine Disc Applications'. Together they form a unique fingerprint.

  • Cite this

    Lin, C. I., Niuman, S., Yamamoto, N., Kulkarni, A., & Singh, J. (2019). Field-Assisted Sintering of Nickel-Based Superalloy Powder for High-Temperature Hybrid Turbine Disc Applications. In R. Padilla, O. Yücel, D. Gregurek, T. Jiang, Z. Peng, B. Zhao, J. P. Downey, E. Keskinkilic, & J-Y. Hwang (Eds.), 10th International Symposium on High-Temperature Metallurgical Processing, 2019 (pp. 175-187). (Minerals, Metals and Materials Series). Springer International Publishing. https://doi.org/10.1007/978-3-030-05955-2_17