Design of high-performance Al-Fe based alloys for laser additive manufacturing

Guest Speaker： Prof. Naoki Takata，Nagoya University, Japan

Inviter: Assoc.Prof. Mingliang Wang

Date&Time: Friday, 21 Nov. 10:00-11:00 

Venue: Meeting Room 308, Xu Zuyao Building

Biography:

Dr. Naoki Takata is a full professor in the Department of Materials Design Innovation Engineering of Nagoya University. He is active in the fundamentals of controlling micro/nanostructure in metals and alloys through various manufacturing processes (additive manufacturing, casting, hot-dip galvanizing process, etc.) based on physical metallurgy, thermodynamics, and crystallography (electron microscopy). He has published over 200 papers in various materials science journals, including Additive Manufacturing, Materials & Design, Scripta Materialia, and Journal of Materials Science & Technology. His work has been cited more than 4,500 times, with an H-index of 38. Prof. Naoki Takata is leading major projects funded by the Japan Science and Technology Agency (PRESTO) and Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research (A)).

Abstract:

Recently, laser powder bed fusion (L-PBF) has emerged as one of the most representative metal additive manufacturing (AM) techniques capable of producing metallic components by using a scanning laser beam to selectively melt consecutive bedded powder layers. Light-weight aluminum (Al) alloys with mechanical functionalities are required as structural materials in widespread industrial fields. From the perspective of sustainable material flow using recycling-friendly Al alloys containing a major impurity of iron (Fe) for the AM process, this study proposes Al-Fe based multi-elemental alloy series available to the L-PBF process under the design concept of elemental partitioning into the Al6Fe metastable phase in solidification. The strategy offers new insights into the control of refined metastable phases formed via L-PBF for developing high-performance, sustainable Al alloys accessible to AM technologies.