Metal Alloy 3D Printing Gets an AI Boost
Metal 3D printing often bogs down in expensive trial-and-error before usable laser settings are found. A Washington State University team has now used artificial intelligence to make printing GRCop-42—a NASA-developed copper-chromium-niobium alloy used in aerospace, including liquid rocket engine combustion chambers—far more efficient and less costly. By taking a smarter route through the options, the researchers avoided having to test more than 100 million candidate configurations.
Drawing on the School of Electrical Engineering and Computer Science and the School of Mechanical and Materials Engineering, the group started with outcomes from 37 previously failed test configurations. In just three months and 40 experiments, they identified six successful configurations with different laser power levels. For the first time, the team successfully printed GRCop-42 with a 500 W laser, a milestone that could sharply lower production costs.
What Artificial Intelligence Brings to the Process
A single GRCop-42 print run can cost hundreds of dollars, and full quality inspection can take days. Team member Jana Doppa explained the significance:
“Ninety percent of commercial printers cannot print with this metal alloy, so, given that we managed to find these possible process parameters, it lets us use those commercial printers. In effect, we are democratizing printing with this alloy.”
Fellow researcher Azza Fadel added:
“Sometimes they printed a certain configuration and the product simply melted. It could not be printed, and even with time and money they could not try all 100 million variants. In our collaboration, we used artificial intelligence to select candidates efficiently.”
The work appeared in the proceedings of the AAAI Conference on Artificial Intelligence, where it earned an award for innovative application. Because the AI model can be adapted to other metal alloys and additive manufacturing systems, it could benefit fields ranging from aerospace to pharmaceutical development.
By making the process more affordable and efficient, such AI-driven approaches may reshape how complex metal components are manufactured. Given that 90 percent of commercial printers currently cannot handle GRCop-42, lowering the barrier to entry could open the material up to many more organizations and spark further research.
As advancements in materials science continue, the development of new alloys is gaining attention. Recently, engineers introduced a novel alloy that boasts ten times the strength of steel while eliminating brittleness. This breakthrough could complement the efficiency gains seen in 3D printing with GRCop-42, showcasing the potential of innovative materials in aerospace applications. To explore this exciting new development, read more about it here.