About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Metal Matrix Composites: Processing, Additive Manufacturing, and Applications
|
| Presentation Title |
From Processing to Performance: Wire Arc Additive Manufacturing of Refractory Alloy-Based Multi-Material Structures |
| Author(s) |
Sainand Mahadev Jadhav, Duckbong Kim |
| On-Site Speaker (Planned) |
Sainand Mahadev Jadhav |
| Abstract Scope |
Wire Arc Additive Manufacturing (WAAM) offers significant potential for fabricating large-scale multi-material structures; however, joining refractory and commercial alloys remains challenging due to differences in thermo-physical properties, diffusion behavior, and intermetallic formation. This study systematically investigates three WAAM-fabricated multi-material systems: 90WNiFe–In625, Ti6Al4V–NbZr1, and TZM–NbZr1. Defect-free interfaces with sound metallurgical bonding and negligible intermetallic formation were achieved in all systems. Interfacial microstructure was governed by diffusion-controlled phase evolution and heat input, which strongly influenced hardness and mechanical performance. The 90WNiFe–In625 system exhibited the highest tensile strength (~618 MPa) and ductility (~49%), while Ti6Al4V–NbZr1 achieved a tensile strength of ~567 MPa with fracture occurring on the NbZr1 side. In contrast, TZM–NbZr1 showed limited ductility due to porosity-induced failure. These findings establish process–structure–property relationships that provide guidelines for designing refractory alloy-based multi-material structures for aerospace, nuclear, defense, and other extreme-service applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Characterization |