Excitation of fluid motion in the latter stage of solidification

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420784
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Metal making/Resorce production engineering
• Research Institution: Hokkaido University
• Principal Investigator: IWAI Kazuhiko 北海道大学, 工学(系)研究科(研究院), 教授 (80252261)
• Co-Investigator(Kenkyū-buntansha): OHMI Tatsuya 北海道大学, 大学院工学研究院, 准教授 (90169061) ; KUMAGAI Takehiko 北海道大学, 大学院工学研究院, 助教 (20250475)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 電磁振動 / 境界層 / 凝固

Outline of Final Research Achievements

As a fundamental research on control of solute concentration distribution in an alloy using a small scale flow induced by the imposition of an electromagnetic force in the latter stage of solidification having a large apparent viscosity, effects of the electromagnetic force on the flow and on the solute concentration distribution have been investigated. The visualization experiment suggests that solute concentration distribution might depend on whether the electromagnetic force was imposed or not. Flow pattern of a liquid under the imposition of the electromagnetic force in a model vessel with a symmetrical solid-liquid interface shape was not symmetrical and was complicated, because the force distribution was not symmetrical. The solute concentration distribution in the model alloy was changed by imposing the electromagnetic force during the latter stage of the solidification.

Free Research Field

材料工学