|About this Abstract
|MS&T23: Materials Science & Technology
|Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|Designing High-Strength Aluminum and Superalloys for Laser Powder Bed Fusion: Analyzing Cases of Success and Failure
|On-Site Speaker (Planned)
High-strength aluminum and superalloys are particularly challenging for Laser powder bed fusion (LPBF) process due to their low ductilities and high crack susceptibilities. Designing or modifying the alloy specifically for the LPBF process is in many cases necessary. In this presentation, we are presenting our experience in analyzing and solving the material issues related to a few new and modified Al and Ni alloys designed for LPBF. Several Al-Sc, Al-Zn aluminum alloys and high-γ' nickel-based superalloys will be covered. Some of the metallurgical topics will be discussed include the exploitation of supersaturation in LPBF, inequilibrium phase formation, LPBF crack susceptibly evaluation and grain size effect. Other issues related to the development of LPBF-specific alloys include sample’s size/type, the consideration of available processing conditions and the ductility requirement for components. We aim to highlight in this presentation the importance of both the metallurgical fundamentals and application considerations in developing LPBF-specific alloys.