|About this Abstract
||MS&T23: Materials Science & Technology
||Interface-mediated Phenomena in Structural Materials
||On the Importance of Interfaces in Gradient Materials for Structural Applications
||Katie O'Donnell, Matt Dolde, Peyman Samimi, Iman Ghamarian, Maria Jose Quintana, Peter C. Collins
|On-Site Speaker (Planned)
||Peter C. Collins
Researchers are increasingly studying gradient materials, where local materials state is engineered to affect a local property, yet rarely considering the role of interfaces. This talk presents three examples where interfaces drives phenomena. In the first example, a gradient material has been affected by understanding and controlling mass transfer across the interface between the molten pool and the environment of an AM system. Following deposition, subsequent microstructural evolution seems to be strongly driven by interfacial energies at aging temperatures. In the second example, a series of binary Ti-X gradients has been subjected to conditions where oxidation was expected. Here, interfaces play an important role in the in diffusion of oxygen and its influence on subsequent phase transformations. In the third example, we present and explore how microstructural gradients change the deformation processes by considering beta titanium alloys.