|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||Wetting Characteristics of CMSX-4 on Various Ceramic Substrates for Use in Investment Casting of Turbine Blades
||Logan Kroneman, Matthew J. M. Krane, Kevin P. Trumble
|On-Site Speaker (Planned)
When attempting to cast fine features, sharp corners can often become rounded as a result of the inability for the liquid metal to fully fill the mold. This inability to fill can be related to the wetting characteristics of the system, which are influenced by the composition and roughness of the mold wall. By better understanding how the mold surface affects the contact angle as a function of time, a mold system can be designed to improve the precision of the as-cast shape. Sessile drop experiments were performed with CMSX-4 and a series of ceramic substrates of differing composition and surface roughness in order to measure the contact angle as a function of time. The substrates were examined for interactions with the liquid metal, such as the formation of reaction products. The results of these experiments can better inform decisions regarding investment casting mold systems in order to improve castings.
||Planned: Supplemental Proceedings volume