Alloy design and microstrucutre contol for high-performance Ni-base intermetallic alloys

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289263
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Osaka Prefecture University
• Principal Investigator: Kaneno Yasuyuki 大阪府立大学, 工学(系)研究科(研究院), 教授 (50214482)
• Co-Investigator(Renkei-kenkyūsha): TAKASUGI Takayuki 大阪府立大学, 工学研究科, 特認教授 (20108567) ; SEMBOSHI Satoshi 東北大学, 金属材料研究所, 准教授 (00364026) ; YAMAGUCHI Takuto 大阪府立産業技術総合研究所, 加工成形科, 主任研究員 (20530041)
• Research Collaborator: HAGISAWA Takehito
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 金属間化合物 / 合金設計 / 組織制御 / 二重複相組織 / Ni基超々合金 / NST合金 / 耐熱合金 / 耐摩耗材料

Outline of Final Research Achievements

The Ni3(Si,Ti) intermetallic alloys with an L12 crystal structure and the dual two-phase Ni3Al (L12) / Ni3V (D022) intermetallic alloys show excellent strength and hardness properties at elevated temperatures compared with the conventional Ni-base superalloys. To further improve the mechanical properties of these Ni-base intermetallic alloys, it is necessary to acquire knowledge about alloy design and microstructure control. In this study, the effects of addition of alloying elements on microstructure and mechanical properties of the Ni3(Si,Ti) and the dual two-phase Ni3Al-Ni3V intermetallic alloys were investigated. Also, the laser metal deposition method was applied to fabricate the cladding layer with the dual two-phase Ni3Al-Ni3V micorstructure.

Free Research Field

金属間化合物