| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
Steel-copper Functionally Graded Material Produced by Twin-wire and Arc Additive Manufacturing (T-WAAM) |
| Author(s) |
Joao Pedro Oliveira |
| On-Site Speaker (Planned) |
Joao Pedro Oliveira |
| Abstract Scope |
A functionally graded material (FGM) based on a Cu-based alloy and HSLA steel was fabricated by twin-wire and arc additive manufacturing (T-WAAM) . Copper and steel parts are of interest in many industries since they can combine high thermal/electrical conductivity with excellent mechanical properties. Mixing copper with steel is difficult due to mismatches in the coefficient of thermal expansion, in the melting temperature, and crystal structure. Moreover, the existence of a miscibility gap during solidification, when the melt is undercooled, causes serious phase separation and segregation during solidification which affects the mechanical properties. Copper and steel control samples and the FGM were fabricated and investigated using optical microscopy, scanning electron microscopy, and high energy synchrotron X-ray diffraction. A smooth gradient of hardness and electric conductivity along the FGM was obtained. An ultimate tensile strength of 690 MPa and an elongation at fracture of 16.6% were measured in the FGM part. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Joining, Mechanical Properties |