Development of the innovative tungsten material by investigation of the dominant factors of long-term reliability

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H06030
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Nuclear fusion studies
• Research Institution: Tohoku University
• Principal Investigator: Fukuda Makoto 東北大学, 工学研究科, 助教 (70757666)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: タングステン / タングステン合金 / 核融合炉 / ダイバータ

Outline of Final Research Achievements

The objective of this work is to understand the dominant factors of long-term reliability of tungsten in fusion reactor operation conditions such as high heat load and particle irradiation and develop the tungsten alloys with higher reliability for future fusion reactor systems such as DEMO. The results of this work showed that the dominant factor of the reliability of W is heat load during short-term operation. With increasing operational time, particle irradiation will become dominant factor of reliability. In addition, it was found that the effective method to suppress grain structure and mechanical property changes and improve reliability of W under heat load and particle irradiation condition.

Free Research Field

核融合炉材料