A controlling method of microsegregation based on tie-line shift phenomenon during solidification in multi-component alloys

2015 Fiscal Year Final Research Report

• Project/Area Number: 25289266
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Metal making/Resorce production engineering
• Research Institution: Hokkaido University
• Principal Investigator: Ohno Munekazu 北海道大学, 工学(系)研究科(研究院), 准教授 (30431331)
• Co-Investigator(Kenkyū-buntansha): SHIBUTA Yasushi 東京大学, 大学院工学系研究科, 准教授 (90401124)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ミクロ偏析 / フェーズフィールド法 / 分子動力学法 / 凝固工学 / デンドライト / 組織形成

Outline of Final Research Achievements

In cast materials, non-uniform distribution of the elements exists on a micro-meter scale, which is called the microsegregation. The microsegregation needs to be precisely controlled for production of cast materials with high quality. In this study, effects of tie-line shift phenomenon involved in multi-component diffusion on the microsegregation were investigated in detail. It was found that the microsegregation of the slow diffusing element can be reduced by utilizing the tie-line shift.

Free Research Field

計算材料科学