About this Abstract |
Meeting |
Superalloys 2024
|
Symposium
|
Superalloys 2024
|
Presentation Title |
D-6: Spark Plasma Diffusion Bonding of Inconel 718 Superalloys by Using Atomic Cluster Powder Fillers |
Author(s) |
Zhen Zhang, Yunting Li, Peng Peng, Maodong Kang, Jun Wang |
On-Site Speaker (Planned) |
Maodong Kang |
Abstract Scope |
Brazing-repair of nickel-based superalloy precision casting has attracted a wide concern as the issues related to hot cracking, dimensional deformation and loss of strengthening phase have not been solved for a long term. In this study, we proposed to use atomic cluster powder filler which was manufactured through mechanical ball-mixing of Ni atomic cluster nanoparticles with Inconel 718 powders to achieve a well-bonded joint. Spark plasma diffusion bonding was conducted to evaluate the atomic cluster powder fillers and Inconel 718 powder fillers counterpart. The microstructure and mechanical properties of bonding joints were investigated to explore the effects of atomic cluster nanoparticles on bonding-repair of superalloys. It was found that the Ni atomic cluster nanoparticles were uniformly distributed into Inconel 718 powders. The joint of atomic cluster powder fillers exhibited a higher densification increased by 42% compared with Inconel 718 powder fillers. The tensile mechanical properties of bonded sample will be dependent on the bonding interface quality rather than microstructure of joint region. The atomic cluster powder fillers resulted in a comparable yield strength of bonded sample with 200 K lower bonding temperature compared with Inconel 718 powder fillers. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |