【公開日：2023.07.31】【最終更新日：2023.05.17】
課題データ / Project Data
課題番号 / Project Issue Number
22UT0378
利用課題名 / Title
Material Assessment for Liquified Hydrogen Storage Tank
利用した実施機関 / Support Institute
東京大学 / Tokyo Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）革新的なエネルギー変換を可能とするマテリアル/Materials enabling innovative energy conversion（副 / Sub）-
キーワード / Keywords
SUS316L stainless steel, EBSD,電子顕微鏡/Electron microscopy,電子顕微鏡/Electron microscopy
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
Magalhaes de Melo Freire Rafael
所属名 / Affiliation
東京大学
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
Tomoya Kawabata,Mitsuo Kimura
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
To investigate the properties and mechanism of failure of SUS316L stainless steel, a fracture tensile specimen was cut in the longitudinal direction to be observed by EBSD. The polishing of the EBSD sample was carried out in the Kawabata's Laboratory at the University of Tokyo and the EBSD observation was conducted at Advanced Research Infrastructure for Materials and Nanotechnology in Japan. This work consisted of an attempt to characterize the material and learn the basic concepts of EBSD.
実験 / Experimental
First, the quality of polishing procedure was accessed by SEM images and it was acceptable. The cleaning procedure of the sample was indicated as one possible point to improve in order to obtain better images.
Then, EBSD analysis was executed with
one tensile fractured specimen.
結果と考察 / Results and Discussion
From the images obtained by EBSD, it was difficult to describe the failure mechanism since the image quality was affected by the high strain level. The experiment was useful to understand the difficult task in characterize a material that failed in ductile mode with high strain levels. Methods and strategies to deal with this issue can be adopted from this trial experiment at ARIM.
図・表・数式 / Figures, Tables and Equations
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
We thank Fukukawa San for the teaching and support in English about how to use the machine. We also thank the administrative team from ARIM for taking care of the communication and schedule for the experiment.
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件