|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
||Cost-effective Titanium Alloy Components for Internal Combustion Engine Valve Trains
||Nick Weston, Ben Thomas, Martin Jackson
|On-Site Speaker (Planned)
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.
||Planned: Supplemental Proceedings volume