|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||Growth, Microstructure and Mechanical Properties of Pt Fiber Grown by Alloy-micro-pulling-down Method
||Takayuki Nihei, Yuui Yokota, Akihiro Yamaji, Yuji Ohashi, Shunsuke Kurosawa, Kei Kamada, Akira Yoshikawa
|On-Site Speaker (Planned)
Platinum group metals and alloys such as Pt and Ir have high melting points and high oxidation resistances, and therefore they have been used for various applications in many industrial fields. In this study, Pt fibers were grown by an Alloy-micro-pulling-down (A-μ-PD) method which could grow metal and alloy fibers from the melt directly, and the microstructures and the mechanical properties of the Pt fibers were evaluated. Pt pellets were set in a ZrO<sub>2</sub> crucible with a φ1 mm hole at the bottom. After the Pt pellets were melted by the high frequency induction heating, a Pt fiber could be grown at 1~110 mm/min growth rates. The Pt fiber grown at 10 mm/min was composed of large domains with <100> crystal orientation along to the growth direction. In tensile tests, the Pt fibers grown by the A-μ-PD method showed extremely different stress-strain curves compared to the commercial Pt wire.