Development of a new functional material with a novel type martensite

2016 Fiscal Year Final Research Report

• Project/Area Number: 26420725
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Kumamoto University
• Principal Investigator: Matsuda Mitsuhiro 熊本大学, 大学院先端科学研究部(工), 准教授 (80332865)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: マルテンサイト変態 / 形状記憶・超弾性特性 / 電子顕微鏡 / 構造・機能材料 / ハフニウム / 長周期積層構造

Outline of Final Research Achievements

We have clarified the martensitic transformation, crystal structure, internal defect and martensite variant of the equiatomic binary alloys combined with IV and X groups. A long period stacking order with 6O structure of the martensitic phase in a Hf-Co-Pd alloy was identified by conventional transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy. The ductile precipitate formed by replacement of third element, such as Pd and Pt, remarkably increases the strength and elongation in B2-type Fe-Co alloy.

Free Research Field

工学