On November 7, 2024, the 132nd IROAST Seminar was held organized by Prof. Sadahiro TSUREKAWA (FAST, Kumamoto University), where Prof. Pavel LEJČEK from “Institute of Physics, Czech Academy of Sciences” (Czech Republic) gave a lecture.

Prof. Pavel LEJČEK, who is also an IROAST Visiting Professor, is a world-renowned researcher with many outstanding achievements in the study of physicochemical properties of materials. Over the years, he has continued joint research and student exchange with Prof. Tsurekawa, and has visited Kumamoto University many times. He has visited Kumamoto University many times and has given lectures on grain boundary segregation to graduate students, but this time he focused on the microstructure of metallic materials by additive manufacturing, or 3D printing, which has attracted much attention in recent years.

At the end of the lecture, Professor Tsurekawa encouraged the participating students to ask questions without hesitation, and they were able to actively ask questions to Dr. LEČEK, making this lecture a very valuable opportunity for the students to come into contact with an outstanding and accomplished researcher in this field.

2024年11月7日、連川 貞弘 教授（熊本大学 大学院先端科学研究部）の世話人により、第132回IROASTセミナーが開催され、チェコ科学アカデミー物理学研究所のPavel LEJČEK教授による講義が行われました。

IROAST客員教授でもあるLEJČEK先生は、材料の物理化学的性質に関する研究において多くの優れた業績を残している世界的に著名な研究者です。長年にわたり、連川教授との共同研究や学生交流を続けており、これまで何度も熊本大学を訪問されています。その際今までは、大学院生向けに粒界偏析について講演をいただいていましたが、今回は、近年注目されている、積層造形、いわゆる３Dプリンターよる金属材料の微細構造に焦点を当てお話しいただきました。

講義の最後には、連川教授より参加した学生へ遠慮無く質問するよう促され、彼らはレーチェック先生に活発に質問をすることができ、この講義が学生にとってこの分野の優れた実績のある研究者に触れる大変貴重な機会となりました。

■ Organizer|世話人   

熊本大学 先端科学研究部   連川 貞弘　教授
Prof. Sadahiro TSUREKAWA (FAST, Kumamoto University)

■ Speaker|講演者

Pavel LEJčEK 教授　（チェコ科学アカデミー物理学研究所・チェコ共和国）
Prof. Pavel  LEJčEK
Institute of Physics, Czech Academy of Sciences (Czech Republic)

■At Venue|会場の様子

■Q&A|質疑応答

■Group Photo|集合写真

第132回IROASTセミナー開催のお知らせ
The 132nd IROAST Seminar

国際先端科学技術研究機構（IROAST）は、チェコ科学アカデミー物理学研究所所属、Pavel Lejček IROAST客員教授による、第132回 IROASTセミナーを下記のとおり開催いたします。
興味のある方はどなたでもご参加いただけます。多くの皆さまのご参加をお待ちしております。
本セミナーは英語にて行います。事前登録は不要です。

1. 日　時：令和6年11月7日（木） 13:30～14:30
2. 会　場：黒髪南C3　〈59番〉(工学部研究棟１) ３F　308室
3. 講演者・タイトル (Speaker & Title)： 
     Prof. Pavel LEJČEK,  Institute of Physics, Czech Academy of Sciences (Czech Republic)
    “Microstructure of metallic materials produced by additive manufacturing”
4. 概要（Abstract）:
   Additive manufacturing – or 3D printing – has been gaining an important role in production of various materials with complicated shapes and new microstructures. In the field of metallic materials, it has been already used to produce functional parts such as propellers and implants. Therefore, the study of the process of additive manufacturing as well as of the structure and properties of the materials produced in this way together with searching for their mutual relationships, has been very intensive in the last decades and results in improved processing of many products.
   In the present talk, the basic processes of the additive manufacturing will be introduced and documented by videos. The research topic of this talk is focused on the development of the microstructure of additively manufactured metallic materials. It will be shown that the microstructure of Al-based alloys differs substantially from that of pure iron, and the reasons for this difference will be explained using our own experimental results. For example of a maraging steel, it will be shown how the presence of trace elements affects the microstructure of the material and its mechanical properties. From the viewpoint of the macrostructure, metamaterials produced by additive manufacturing will be introduced which represent an important group of metallic products.
5. 世話人： 連川　貞弘　教授　（大学院先端科学研究部）
                    Email：turekawa@kumamoto-u.ac.jp

【IROASTセミナーに関するお問合せ】
    平川  Email: szk-kiko@jimu.kumamoto-u.ac.jp  

IROAST will have the 132nd IROAST Seminars by IROAST Visiting Professor Pavel Lejček as follows.
Anyone interested in this seminar is more than welcome. Registration is not required.
We hope to see you at the seminar.

1. Date and time: November 7 (Thursday), 13:30～14:30
2. Venue: Kurokami South C3,  3F Room 308 (Faculty of Engineering Research Bldg. 1)
3. Speaker, Title & Abstract: Referred to above
4. Organizer: Prof. Sadahiro Tsurekawa (FAST, Kumamoto University)
   　　　　　　E-mail: turekawa@kumamoto-u.ac.jp

This seminar will be held in English.

IROAST Seminar inquiries
Hirakawa (Ms)
szk-kiko@jimu.kumamoto-u.ac.jp