|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Powder Metallurgy of Light, Reactive and Other Non-ferrous Metals
||Characterization and Heat Treatment of Ti-6Al-4V Powders for Use in Cold Spray Deposition
||Satish Bhattiprolu, Grant A Crawford
|On-Site Speaker (Planned)
Cold spray is a solid state deposition process which is attractive for a variety of applications including repair of metallic components. The process relies on significant plastic deformation of the metal powder to achieve a dense coating. Consequently, depositing high strength materials, such as titanium alloys, is challenging. Feedstock powder microstructure is known to strongly influence cold spray deposition quality. This talk will present an in-depth microstructural analysis of commercially available Ti-6Al-4V feedstock powders to identify the ideal powder microstructure for cold spray processing. Several feedstock powders (i.e. gas atomized, plasma atomized, hydride-dehydride) were characterized in as-received and heat treated condition using optical microscopy, scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy, and nanoindentation. Heat treatment was conducted to improve powder ductility and deposition quality. Powders were deposited using a high pressure cold spray system and the coating quality was compared with respect to porosity, hardness, and adhesion strength.
||Planned: Supplemental Proceedings volume