A5018800268- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- Microstructure and mechanical properties
- Seismic Waves and Analysis
- Advanced Materials Characterization Techniques
- Advanced materials and composites
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Metal Alloys Wear and Properties
- High Temperature Alloys and Creep
- Additive Manufacturing Materials and Processes
- Advanced Welding Techniques Analysis
- Intermetallics and Advanced Alloy Properties
- Hydrogen embrittlement and corrosion behaviors in metals
- Aluminum Alloy Microstructure Properties
- Methane Hydrates and Related Phenomena
- Microstructure and Mechanical Properties of Steels
- Nuclear Materials and Properties
- Diamond and Carbon-based Materials Research
- Metallurgy and Material Forming
- Fusion materials and technologies
- Mechanical stress and fatigue analysis
- Magnetic Properties of Alloys
- High-Velocity Impact and Material Behavior
- Concrete Corrosion and Durability
University of Tennessee at Knoxville
2017-2024
Pacific Northwest National Laboratory
2020-2024
Battelle
2022-2024
Oak Ridge National Laboratory
2017-2018
Knoxville College
2018
Beijing Institute of Technology
2013
A full picture of tensile deformation mechanism evolution in the FCC-to-HCP transformation-induced plasticity high entropy alloy (TRIP-HEA) was revealed by real-time situ neutron diffraction. Three transition points, i.e. triggering TRIP FCC phase and activation single multiple twinning HCP phase, were identified to result significant stress redistribution. Accordingly, four stages with distinct phase-specific work-hardening behaviors recognized. It concluded that easily-triggered persisting...
Abstract Understanding the early stages of interactions between oxygen and material surfaces—especially at very high spatial resolutions—is highly beneficial for fields ranging from materials degradation, corrosion, geological sciences, forensics, catalysis. The ability in situ atom probe tomography (APT) is demonstrated to track diffusion metal ions nanoscale resolution during oxidation a model Fe–Cr–Ni alloy. Using 18 O isotope tracers these APT experiments complementary ex multimodal...
Abstract Stainless steels are used in a myriad of engineering applications, including construction, automobiles, and nuclear reactors. Developing accurate, predictive mechanistic models for corrosion electrochemical kinetics stainless has been topic research studies over many decades. Herein, we quantified the aqueous model austenitic Fe–18Cr–14Ni (wt%) alloy presence absence applied potential using systematic situ atomic force microscopy (EC-AFM) transmission electron (TEM). Without an...
Shear banding dynamics in bulk metallic glasses (BMGs) is manifested by the spatiotemporal evolution of strain fields which turn depend on structural heterogeneities. The spacing these heterogeneities, as a characteristic length scale, was determined from analysis nanoindentation pop-in tests using stochastic model. Furthermore, pre-stress elastic bending and residual stress plastic BMG plates were found to dramatically decrease such spacings, thus increasing heterogeneity density...
Recovering rare earth elements (REE) from used permanent magnets, which contain about 30 wt % of elements, has long been a technological challenge. Current recycling methods rely on energy- and chemical-intensive pyrometallurgical or hydrometallurgical processes that are neither economically nor environmentally viable for earth-containing magnets. Enabling an efficient simplified process recovery refining REEs contained in end-of-use (EoU) products, such as neodymium–iron–boron...
Abstract Although recycling secondary aluminum can lead to energy consumption reduction compared primary manufacturing, products produced by traditional melt-based processes are inherently limited in terms of alloy composition and microstructure, thus final properties. To overcome the constraints associated with melting, we have developed a novel solid-phase simultaneous alloying method. This innovative process enables 6063 scrap copper, zinc, magnesium, form nanocluster-strengthened...
During the friction surfacing process, forge-axial force, rotation rate, and traverse speed of consumable feed-rod play crucial roles in determining deposition rate layer morphology. Although some researchers have studied enhancement by introducing a backward tilt relative to direction, there has been limited investigation into effects other orientations. Therefore, this study aims provide more comprehensive understanding tilting surfacing. In investigation, undergoes four distinct...