[G] Melting and solidification process/High temperature process

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[260] Evaluation of the Melting Behavior of Fined and Spheroidized Primary Crystals of Al-6.4mass%Si by In-Situ Observation

○Natsumi Tsuchida¹, Takaaki Kato², Satomi Takamatsu³, Kota Kadoi⁴, Masakazu Kobayashi⁵, Takeshi Higaki⁶, Asuka Suzuki⁶, Makoto Kobashi⁶, Shinsuke Suzuki² (1. Nagoya Univ. (Previous: Waseda Univ.), 2. Waseda Univ., 3. Chiba Inst. of Technol., 4. Osaka Univ., 5. Toyohashi Univ. of Technol., 6. Nagoya Univ.)

Keywords:

aluminum-silicon alloy,in-situ observation,melting behavior,slope casting process

Billets were fabricated from an Al-6.4mass% Si alloy by slope casting process. The initial primary crystals exhibited solidification segregation near the grain boundaries. In-situ observation of the melting behavior showed that the segregated regions melted simultaneously with the eutectic phase at temperatures below the eutectic temperature.