| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
A-70: Performance of Wire-arc Additive Manufactured Ti-6Al-4V and Ti-5Al-5Mo-5V-3Cr Dissimilar Alloy-alloy Composite Interfaces |
| Author(s) |
Jacob R. Kennedy, Alec E Davis, Armando Caballero, Ed J Pickering, Stewart Williams, Phil B Prangnell |
| On-Site Speaker (Planned) |
Jacob R. Kennedy |
| Abstract Scope |
The possibility exists to produce integral components with graded properties by DED Wire-Arc Additive Manufacturing (WAAM). However, critical to a dual material system is to control the interface between the two alloys. In order to explore this capability, trial samples have been produced by depositing Ti64 on Ti5553. The resultant chemical and microstructure gradient and associated interface mechanical behaviour has been investigated. The results show that mixing of Ti5553 alloying elements with the Ti64 primarily occurs in multiple steps, corresponding to the progressive dilution that results from sequential re-melting. This is reflected in the interface microstructure gradient, but is complicated by the associated thermal gradients, which also affect the α phase distribution close to the interface.Compact tensile tests showed that crack fracture paths can also be deflected to follow the interface. The implications for the production of WAAM tailored parts with graded performance are discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |