|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Application of Solidification Fundamentals to Challenges in Metal Additive Manufacturing
||Enabling New Additive Alloys through Solidification Control
||Hunter Martin, Brennan Yahata, Robert Mone, Ekaterina Stonkevitch, Jacob Hundley, Tobias Schaedler, Tresa Pollock
|On-Site Speaker (Planned)
Additive Manufacturing of metals has been limited to a select group of weldable alloy systems. This is most obvious in the available aluminum alloys where standard high strength aluminum alloys, 2000 and 7000 series, suffer from hot tearing during solidification making them unsuitable for processing in additive manufacturing. We developed a new technique to identify solidification mechanisms reducing this tendency in the unique solidification conditions of direct laser melting. By modifying material feedstock and controlling processing parameters, the hot tear susceptibility can be reduced. In addition, the microstructure and mechanical properties of additively manufacture aluminum alloys can be optimized. Through simulations the optimum solidification path can identified and parameters are tailored to control solidification of the melt pool accordingly. We will show that application of this process can be used to enable additive manufacturing of new high strength aluminum alloy systems as well as other difficult to process systems.
||Planned: Supplemental Proceedings volume