| About this Abstract |
| Meeting |
2018 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
|
| Presentation Title |
Cost-effective Titanium Alloy Components for Internal Combustion Engine Valve Trains |
| Author(s) |
Nick Weston, Ben Thomas, Martin Jackson |
| On-Site Speaker (Planned) |
Nick Weston |
| Abstract Scope |
Titanium alloy components offer considerable scope to reduce weight and improve performance in the automotive sector, yet associated high costs limit utilisation outside high-end vehicles. A case study replacing conventionally processed low-alloy steel rocker arms from a V8 commercial car engine with titanium alloy parts manufactured via the FAST forge process is presented. This two step technique considerably reduces the processing steps required to produce near-net-shape components, which will lead to significant cost reductions. Field assisted sintering technology (FAST) was used to produce a range of preform shapes from powder that were forged then finish machined. Final component weight was reduced by 45%. An optimised preform shape, compared to currently used bar stock, reduced flash by 55%. Mechanical properties of Ti-6Al-4V HDH powder processed via FAST-forge compare favourably to conventional wrought material. Recycled machining swarf was also investigated as feedstock, providing an even greater cost reduction potential than conventional powders. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |