April 7 - 11, 2025
Seattle, Washington
Symposium Supporters
2025 MRS Spring Meeting & Exhibit
BI01.05.01

Recent Advances Toward Additive Manufacturing of High-Strength Aluminum Alloys and Thermoelectric Bismuth Telluride Materials

When and Where

Apr 11, 2025
8:30am - 9:00am
Summit, Level 3, Room 325

Presenter(s)

Co-Author(s)

Kyung Tae Kim1,Jungho Choe1,Jinhee Bae1,Jeong Min Park1,Hyomoon Joo2

Korea Institute of Materials Science1,Hyundai Motor Group2

Abstract

Kyung Tae Kim1,Jungho Choe1,Jinhee Bae1,Jeong Min Park1,Hyomoon Joo2

Korea Institute of Materials Science1,Hyundai Motor Group2
Metal additive manufacturing (MAM) has demonstrated significant potential in various industries, including aerospace, automotive, military, shipbuilding, and electronics, by enabling the direct fabrication of complex and lightweight structures. In this presentation, the latest additive manufacturing-related results from our group will be introduced, covering research on structural applications using the Laser Powder Bed Fusion (L-PBF) process and functional applications utilizing material extrusion (MEX) processes.
Our primary focus is on the development of metal powder-based materials for additive manufacturing processes. We have developed several fabrication technologies for producing customized metal powders tailored to these processes. Based on our powder synthesis capabilities, we have recently developed a novel powder and processing recipe to address the formation of solidification cracks in high-strength Al-Zn-Mg alloys, which are known to have low processability in the L-PBF process. By forming a hybrid microstructure consisting of columnar and equiaxed grains through addition of inoculant particles, this approach opens new possibilities for fabrication of the 7xxx series of high-strength Al alloys through L-PBF processes.
Furthermore, we have recently investigated and developed additive manufacturing technology of edge-oxidized graphene-embedded thermoelectric materials by using material extrusion processes. The developed process requires not only a specialized ink for MEX but also essential post-heat treatment to produce highly densified additively manufactured samples with high performance. We are also in the process of developing novel powders for ink-based additive manufacturing, targeting magnetic as well as thermoelectric energy conversion applications for electric vehicles. Thus, finally, future strategy both structural and functional applications based on metal powders for metal additive manufacturing which is performed at KIMS would be briefly introduced.

Keywords

powder metallurgy | strength | thermoelectricity

Symposium Organizers

Jurgen Eckert, Montanuniversität Leoben
Ryan Ott, Ames Laboratory
Min-Ha Lee, Korea Institute of Industrial Technology
Alessa Hool, ESM Foundation

Symposium Support

Bronze
Korea Institute of Materials Science

Session Chairs

Kyung Tae Kim
Anja Waske

In this Session