Current alloys used in Additive Manufacturing (AM) were designed to be processed via traditional metallurgy paths such as forging, and have different microstructures and properties when put through AM processes. Heat treating AM-built alloys using standard industry specifications causes material performance issues.
New material chemistries designed specifically for AM and post-build thermal processing tailored for the unique microstructures are needed to increase performance of AM components.
QuesTek Innovations has successfully used Integrated Computational Materials Engineering (ICME) technologies to design novel, improved alloys that are displacing materials that have been used for decades in demanding applications such as Air Force and Navy landing gear, helicopter transmissions and high-performance racing.
QuesTek has used ICME technologies to optimize legacy alloys and design entirely new alloys tailored specifically for AM, and to optimize post-build heat treatments across a variety of alloy systems including Al, Ti, Ni, Cu, W, Fe and stainless steel.
Specific examples of materials properties and applications will be presented of US Army and US Navy-funded projects that will demonstrate (i) a Ti new alloy with 20% increase in strength over traditional Ti-6-4 in AM demonstrated via the Sciaky EBAM process, (ii) a high performance carburizable steel for AM gear applications printed on EOS M 280 and Arcam and (iii) new, printable, high strength aluminum alloys for use at room temperature and temperatures up to 325°C printed on EOS M280.
- Understand the current materials issues with using legacy “off the shelf” alloys in Additive Manufacturing processes
- Realize that new materials are being developed that could enhance their component or product performance when produced via Additive Manufacturing