About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Sintering and Related Powder Processing Science and Technologies
|
| Presentation Title |
Solid-state diffusion bonding for INCONEl 617
superalloy using field-assisted sintering technology
(FAST) guided by CALPHAD approach |
| Author(s) |
Husain FFHS Alnaser, Abdulaziz Kurdi, Ahmed Degnah |
| On-Site Speaker (Planned) |
Husain FFHS Alnaser |
| Abstract Scope |
This study explores solid-state diffusion bonding of two INCONEL 617 alloy samples using field-assisted sintering technology (FAST). The focus lies in characterizing the faying interface and experimentally validating the alloy design predictions made using the CALPHAD (Calculation of Phase Diagrams) approach. By accounting for kinetic limitations, the study enables control over phase stability and transformation, guided by CALPHAD-informed alloy modeling. The design incorporates a pseudo-binary phase diagram and thermal phase mapping to determine the optimal bonding temperature, while also examining phase evolution influenced by increasing molybdenum content and temperature. CALPHAD recommended FAST conditions of 800 °C, 10 MPa pressure, and a 30-minute hold time. Results show that the bonded interface (faying surface) primarily consists of the gamma (γ) phase, while the adjacent regions in the bulk alloy exhibit both γ and gamma prime (γ′) phases, indicating successful control over phase formation during bonding. |