|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||Integration of Fundamental Concepts from Solidification for Design of Printable, Strong, and Ductile Aluminum Alloys for Additive Manufacturing
||Saket Thapliyal, Le Zhou, Mageshwari Komarasamy, Rajiv S. Mishra
|On-Site Speaker (Planned)
Owing to their high specific strength and good machinability, aluminum alloys are widely used with conventional manufacturing routes. However, these alloys are susceptible to hot cracking upon laser-powder bed fusion additive manufacturing (AM) resulting in their poor printability. Reasons for hot cracking include a) formation of columnar dendritic grains that do not accommodate contraction strains effectively and b) lack of availability of liquid at the terminal stage of solidification. In this work, fundamental concepts from nucleation theory and eutectic solidification have been utilized to design strong and ductile Al alloys with excellent printability. Furthermore, a high throughput computational approach is presented for design of printable Al alloys for AM. The as-built microstructure and mechanical properties of the designed alloys match well with the predictions made through computational methods. Implications of utilizing the fundamental concepts of solidification on as-built microstructure and mechanical properties of the designed alloys are further examined.
||Additive Manufacturing, Solidification, Aluminum