Events Calendar

Additive Manufacturing of Metals: Building Unreliable Microstructures 20 Microns at a Time

Speaker: Professor Lyle Levine, National Institute of Standards and Technology

Talk Title: Additive Manufacturing of Metals: Building Unreliable Microstructures 20 Microns at a Time

Series: Graduate Seminar

Abstract: Additive manufacturing of metals could revolutionize the design and production of complex, high value metal parts. However, the extreme processing conditions of, essentially, welding millions of microscopic bits of metal together, create deleterious microstructures with high stresses, extreme compositional gradients, non-equilibrium phases, and a variety of potentially disastrous build flaws. How can the processing and post processing treatments be optimized to produce useable and consistent microstructures and mechanical properties? We are developing a comprehensive methodology to answer three questions: what is there?, why is it there?, and how can
we fix what is there? To optimize the build and post build processing steps, we are developing and using a combination of multicomponent computational thermodynamic and kinetic microstructural evolution simulations, finite element models, and worldleading stress and microstructure characterization methods using synchrotron X-rays, neutrons, and lab based measurements. I will describe our progress in our first target
systems, Ni-based super alloys and steels.

Location: James H. Zumberge Hall Of Science (ZHS) - 159

Audiences: Everyone Is Invited

Contact: Martin Olekszyk