Microstructural evolution in a rapidly solidified Al-4 mass%Fe droplet

✍ Scribed by Seong-Gyoon Kim; Seong-Ho Shin; Toshio Suzuki; Takateru Umeda

• Book ID: 103953569
• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 470 KB
• Volume: 181-182
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/0921-5093(94)90822-2

✦ Synopsis

A two-dimensional non-newtonian numerical analysis on the solidification of Al-4mass%Fe droplet was represented which includes the transition between the partitionless and partitioned solidification modes. It was shown that, instead of the banded-structure formation, a strong instability on the macroscopic solid-liquid interface occurs in the transition range. The patterns predicted as functions of the initial undercooling and the droplet size were compared with the microstructures of the gas-atomized A1-4mass%Fe powders.