|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Materials Processing Fundamentals
||MM-2: Characterization and Heat Treatment of Ti-6Al-4V Powders for Use in Cold Spray Deposition
||Satish Bhattiprolu, Grant Crawford, Christian Widener
|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, however, 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, and transmission electron microscopy. 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 and adhesion strength.
||Planned: EPD Congress Volume