A5100344188- High Entropy Alloys Studies
- Additive Manufacturing Materials and Processes
- High-Temperature Coating Behaviors
- Metallic Glasses and Amorphous Alloys
- Additive Manufacturing and 3D Printing Technologies
- Glass properties and applications
- Advanced materials and composites
- Nanoporous metals and alloys
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Welding Techniques and Residual Stresses
- Phase-change materials and chalcogenides
- Extraction and Separation Processes
- Cellular and Composite Structures
- Metal Alloys Wear and Properties
- Electrocatalysts for Energy Conversion
- Surface Treatment and Residual Stress
- Microstructure and mechanical properties
- Supercapacitor Materials and Fabrication
- Hydraulic and Pneumatic Systems
- Iron and Steelmaking Processes
- Advanced Materials Characterization Techniques
- Cultural Heritage Materials Analysis
- Electromagnetic wave absorption materials
- Laser Material Processing Techniques
University of Massachusetts Amherst
2018-2025
University of Southern California
2025
University of California, Irvine
2024
University of Alabama at Birmingham
2023-2024
University of Notre Dame
2024
Southwest Petroleum University
2024
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2024
Chongqing University
2022-2023
China Academy of Space Technology
2023
Yangtze University
2023
Abstract Additively manufactured (AM) metallic materials commonly possess substantial microscale internal stresses that manifest as intergranular and intragranular residual stresses. However, the impact of these on mechanical behaviour AM remains unexplored. Here we combine in situ synchrotron X-ray diffraction experiments computational modelling to quantify lattice strains different families grains with specific orientations associated an 316L stainless steel under uniaxial tension. We...
Abstract Alkaline water electrolysis at high current densities is plagued by gas bubble generation and trapping in stochastic porous electrodes (e.g., Ni foams), which causes a significant reduction the number of electrolyte accessible catalyst active sites. Here, 3D printed (3DPNi) with highly controlled, periodic structures are reported that suppress coalescence, jamming, and, hence, result rapid release. The 3DPNi decorated carbon‐doped NiO achieve density 1000 mA cm −2 1.0 m KOH hydrogen...
Monolithic nanoporous metals, derived from dealloying, have a unique bicontinuous solid/void structure that provides both large surface area and high electrical conductivity, making them ideal candidates for various energy applications. However, many of these applications would greatly benefit the integration an engineered hierarchical macroporous network increases directs mass transport. We report on 3D (three-dimensional)-printed gold (3DP-hnp-Au) with nonrandom macroarchitectures by...
Abstract Recent research in multi-principal element alloys (MPEAs) has increasingly focused on the role of short-range order (SRO) material performance. However, mechanisms SRO formation and its precise control remain elusive, limiting progress engineering. Here, leveraging advanced additive manufacturing techniques that produce samples with a wide range cooling rates (up to 10 7 K s −1 ) an enhanced semi-quantitative electron microscopy method, we characterize three CoCrNi-based...
Whereas 3D printing of thermoplastics is highly advanced and can readily create complex geometries, metals still challenging limited. The origin this asymmetry in technological maturity the continuous softening with temperature into a formable state, which absent conventional metals. Unlike metals, bulk metallic glasses (BMGs) demonstrate supercooled liquid region upon heating, analogous to thermoplastics. Here we that, extension analogy, BMGs are also amenable extrusion-based through fused...
The fracture toughness of glassy materials remains poorly understood. In large part, this is due to the disordered, intrinsically non-equilibrium nature glass structure, which challenges its theoretical description and experimental determination. We show that notch metallic glasses exhibits an abrupt toughening transition as a function well-controlled fictive temperature (Tf), characterizes average structure. ordinary temperature, has been previously associated with ductile-to-brittle...
Abstract Laser powder-bed fusion (L-PBF) additive manufacturing presents ample opportunities to produce net-shape parts. The complex laser-powder interactions result in high cooling rates that often lead unique microstructures and excellent mechanical properties. Refractory high-entropy alloys show great potential for high-temperature applications but are notoriously difficult process by processes due their sensitivity cracking defects, such as un-melted powders keyholes. Here, we present a...
We used powder hot extrusion followed by annealing to fabricate a dual-phase AlCoCrFeNi2.1 eutectic high-entropy alloy consisting of both non-recrystallized and recrystallized grains with dense nano-sized precipitates arranged in heterogeneous structures. The resulting exhibits superior tensile properties yield strength ∼1.2 GPa, an ultimate ∼1.5 uniform elongation ∼18%. Such multiscale microstructure results exceptional strain hardening the activating remarkable hetero-deformation induced...
Abstract Disruptive custom electronics require a transformation in energy storage systems from traditional thin‐film units to shape conformable 3D components. However, current thick electrodes suffer uncontrollable geometries and architectures, which lead ion diffusion limitations, poor mechanical properties. Here, designed, superelastic polypyrrole (PPy)‐coated graphene aerogel (GA) are fabricated via printing polymer self‐assembly methods. This resilient GA template (up 90% compression)...