Spark Plasma Diffusion Bonding of Inconel 718 Superalloys by Using Atomic Cluster Powder Fillers

Zhen Zhang, Yunting Li, Peng Peng, Maodong Kang, Jun Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Brazing-repairRepairof nickel-based superalloyNickel-based superalloy precision casting has attracted a wide concern as the issues related to hot crackingCracking, dimensional distortion and loss of strengthening phase have not been solved for a long term. In this study, we proposed to use atomic clusterAtomic cluster powder filler which was manufactured through mechanical ball-mixing of Ni atomic clusterAtomic cluster nanoparticles with Inconel 718 powders to achieve a well-bonded joint. Spark plasma diffusion bondingDiffusion bonding was conducted to evaluate the atomic clusterAtomic cluster powder fillers and Inconel 718 powder fillers counterpart. The microstructureMicrostructure and mechanical propertiesMechanical properties of bonding joints were investigated to explore the effects of atomic clusterAtomic cluster nanoparticles on bonding of superalloysSuperalloys. It was found that the Ni atomic clusterAtomic cluster nanoparticles were uniformly distributed into Inconel 718 powders. The joint of atomic clusterAtomic cluster powder fillers exhibited a higher densificationDensification increased by 42% compared with Inconel 718 powder fillers. The tensile mechanical propertiesMechanical properties of bonded sample will be dependent on the bonding interface quality rather than microstructureMicrostructure of joint region. The atomic clusterAtomic cluster powder fillers resulted in a comparable yield strength of bonded sample with 200 K lower bonding temperature compared with Inconel 718 powder fillers.

Original languageEnglish
Title of host publicationSuperalloys 2024 - Proceedings of the 15th International Symposium on Superalloys
EditorsJonathan Cormier, Ian Edmonds, Stephane Forsik, Paraskevas Kontis, Corey O’Connell, Timothy Smith, Akane Suzuki, Sammy Tin, Jian Zhang
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1036-1045
Number of pages10
ISBN (Print)9783031639364
DOIs
StatePublished - 2024
Externally publishedYes
Event15th International Symposium on Superalloys, ISS 2024 - Pennsylvania, United States
Duration: 8 Sep 202412 Sep 2024

Publication series

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

Conference

Conference15th International Symposium on Superalloys, ISS 2024
Country/TerritoryUnited States
CityPennsylvania
Period8/09/2412/09/24

Keywords

  • Atomic cluster
  • Diffusion bonding
  • Mechanical properties
  • Superalloys

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