|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Solidification Processing of Light Metals and Alloys: An MPMD Symposium in Honor of David StJohn
||High Strength Ti-6Al-4V Composites by In Situ Generated Stable Nanoparticles
||Soumya Vinod, Baburaj Eranezhuth, Laverne Smith, Jun Guan, Viktor Hadjiev, Kenneth White, James K Meen
|On-Site Speaker (Planned)
Ti6Al4V is highly used in marine, offshore and power generation industries due to its low density, high strength and excellent corrosion resistance. However, the properties of the alloy changes with oxygen content which remains dissolved at high temperatures and precipitate out to form oxides at low temperatures. Oxygen is detrimental to ductility of Ti-6Al-4V especially when it exceeds 0.33 wt.%, above which ductility drops rapidly of a minimum value of 10% . Improvements in mechanical properties of the alloy arising from the dispersion of hard particles, removal of oxygen, and grain size reduction can be achieved through the process of mechanical alloying of the alloy with oxygen scavenger element such as yttrium .In this work, Ti6AL4V-Y composite material was developed by consolidation of ball milled Ti6AL4V and Y powders. Experimental studies indicated the formation of Y4Al2O9 and improved hardness in Y added composites.