|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||A-19: Understanding Silicon Reinforcement in Ti6Al4V to Enhance Wear Resistance
||Jose Avila, Zumurda Alrawahi, Susmita Bose, Amit Bandyopadhyay
|On-Site Speaker (Planned)
Laser engineered net shaping was used to fabricate silicon reinforced Ti6Al4V matrix composites to understand the influence of Si addition on wear properties. The objective of the work was to see if an in situ tribofilm would develop during articulation to increase wear resistance and decrease metal ion leaching. Microstructural analysis and hardness testing was also performed. It was found that hardness increased with the addition of silicon due to the near complete use of silicon and formation of titanium silicides. With increased silicon quantity, a tribofilm development was observed in contact resistance measurement using a biotribometer. It was found that with the in situ tribolfilm formation, coefficient of friction decreased while improving the wear resistance of the composites. Calcium phosphate was also added to the Ti6Al4V-silicon composites and were tested for wear behavior in simulated body fluid, which resulted in further increase of wear resistance of the base alloy.
||Planned: Supplemental Proceedings volume