|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Titanium Technology
||Development of TiAl alloys for high temperature applications
||Seong-Woong Kim, Yoon-oh Jung, Ji-sung Park, Kyeongho Kong, Seung Eon Kim
|On-Site Speaker (Planned)
Research on developing new TiAl alloys for high temperature applications is introduced. At KIMS, we have developed new TiAl alloys which have excellent room temperature and high temperature properties. Especially, the new alloy showed excellent oxidation resistance in the temperature range from 900 to 1000oC by forming stable Al2O3 oxidation layer. Process developement of casting, forging as well as 3d printing on the newly developed KIMS alloys was introduced. Especially, small size turbine wheel and blade were manufactured be centrifugal casting process. The possibility of the application of the new alloy in the gas turbune engine was examined from the operation test of 300kW sized gas turbine. The results from the testing and validation of TiAl blade were shown that KIMS alloy can be used as a turbine blade above 900oC. Finally, we proposed some underlying mechanism of high temperature strength of KIMS alloy from TEM and SEM observations.
||Titanium, High-Temperature Materials, Mechanical Properties