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2021 Fiscal Year Final Research Report

Development of In-situ indentation method for the establishment of microstructure design principles through the observation of cracking of multi-phase alloys

Research Project

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Project/Area Number 19K05026
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26030:Composite materials and interfaces-related
Research InstitutionHokkaido University

Principal Investigator

Miura Seiji  北海道大学, 工学研究院, 教授 (50199949)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsその場観察 / 硬さ / 破壊 / 組織制御
Outline of Final Research Achievements

The aim of this research is to establish the experimental method for the in-situ observation of crack formation in multi-phase materials during the indentation though a transparent indent made of sapphire or diamond. This apparatus enables us to understand the time-dependent evolution of cracks and deformation around the indents.

Free Research Field

金属材料学

Academic Significance and Societal Importance of the Research Achievements

本研究では、脆性相-延性相からなる多相合金の破壊挙動理解のために、亀裂進展の簡便な情報取得を目指した。ハイスループットな情報取得法として圧子押し込みによる破壊試験に、その場観察(in-situ)組み合わせることで、材料の弱点である破壊の本質に迫るために必須の情報を短時間で取得可能となり、新規合金・セラミックスや複合材料の開発期間短縮や工業製品のの事故解析による安全・安心の拡張に大きく寄与する。

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Published: 2023-01-30  

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