Study on irregular rolling deformation in single crystals of nickel aluminide

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420750
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Material processing/Microstructural control engineering
• Research Institution: National Institute for Materials Science
• Principal Investigator: DEMURA Masahiko 国立研究開発法人物質・材料研究機構, 構造材料研究拠点, 特別研究員 (10354177)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 金属間化合物 / ニッケルアルミナイド / 結晶塑性変形 / 圧延 / 集合組織 / 単結晶 / 計算機シミュレーション

Outline of Final Research Achievements

This study was aimed at clarifying the mechanism for an irregular rolling deformation, which appears in single crystals of nickel aluminide. We have originally developed a method to quantify the slip systems activated in the irregular rolling deformation, based on the computational crystal plasticity. For three cases of single-crystal rolling experiments we have already reported, we quantified the activated slip systems and compare them with those that should be activated in an ideal rolling deformation, i.e. under the plane strain condition. From the comparison, we identified what slip systems were constraint and proposed a hypothesis that a specific kind of the interaction of slip systems are responsible for this constraint in the nickel aluminide.

Free Research Field

材料学