|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||GAT-2017 (Gamma Alloys Technology - 2017)
||F-40: TiAl-based Intermetallic Alloy with Addition of Zirconium
||Sangwoo Kim, Hyouk-Chon Kwon, Hyo-soo Lee
|On-Site Speaker (Planned)
TiAl-based alloys represent an important characteristic of high temperature structural materials. So, the Ti-Al based alloy have been used in various fields such as aircraft industry, chemistry industry and automobile industry. This paper describes the processing results of TiAl alloys melted by VAR. TiAl alloys, with 0~4 at% zirconium, were produced to replace their structure by a quasi-lamellar one. A evaluation of the respective zirconium partition among micro-constituents suggests that the more zirconium added, the more volume fraction of gamma phase increased. This study shows that the zirconium is the role of stabilizer of gamma. The morphology and structure of alloy with addition of zirconium were analyzed by using SEM and XRD. The oxidation behavior of specimens was assured by TGA. The research has shown that addition of zirconium to TiAl resulted in a slight increase in hardness and a significant improvement of the oxidation resistance.
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