A5068647795- Shape Memory Alloy Transformations
- High Entropy Alloys Studies
- Microstructure and Mechanical Properties of Steels
- Titanium Alloys Microstructure and Properties
- Magnetic and transport properties of perovskites and related materials
- Microstructure and mechanical properties
- Additive Manufacturing Materials and Processes
- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Additive Manufacturing and 3D Printing Technologies
- Advanced Electron Microscopy Techniques and Applications
- Catalysis for Biomass Conversion
- Electron and X-Ray Spectroscopy Techniques
- High-Temperature Coating Behaviors
- Advanced Materials Characterization Techniques
- Metal and Thin Film Mechanics
- Integrated Circuits and Semiconductor Failure Analysis
- Intermetallics and Advanced Alloy Properties
- Multiferroics and related materials
- Paleontology and Evolutionary Biology
- Creativity in Education and Neuroscience
- Fatigue and fracture mechanics
- Transition Metal Oxide Nanomaterials
- Calcium Carbonate Crystallization and Inhibition
- Advanced Surface Polishing Techniques
Thermo Fisher Scientific (United States)
2018-2024
Thermo Fisher Scientific (Israel)
2023
The Ohio State University
2015-2021
A new class of non‐equiatomic FeNiCoAlTaB (NCATB) high entropy alloy (HEA) is introduced, which exhibits tunable properties from cryogenic/ambient superelasticity to ultra‐high strength through controlling the nature or type martensite. In current NCATB‐HEA system, depending on size γ’‐Ni 3 Al (L1 2 ) precipitates, thin‐plate, lenticular, butterfly, and lath‐like martensite can form. When thin‐plate thermoelastic favored, a superelastic strain about 0.025 (ambient) ≈0.01 (cryogenic) achieved...
Using scanning transmission electron microscopy, along with energy loss spectroscopy, under cryogenic conditions, we demonstrate transition-metal dissolution from a layered Ni-rich oxide cathode material and subsequent diffusion into the bulk of lithium thiophosphate solid electrolyte during electrochemical cycling. This problem has previously only been considered for liquid-electrolyte-based batteries.
The authors report on a relatively new alloy, Ni 54 Ti 45 Hf 1 , that exhibits strengths more than 40% greater those of conventional NiTi‐based shape memory alloys − 2.5 GPa in compression and 1.9 torsion retains during cycling. Furthermore, the superelastic hysteresis is very small stable with Aging treatments are used to induce high density 4 3 precipitates, which impede plasticity cycling yet do not impart substantial dissipation reversibility phase transformation. Pairing testing...
Accelerating the alkaline hydrogen evolution reaction (HER), which involves slow cleavage of HO-H bonds and adsorption/desorption (H*) hydroxyl (OH*) intermediates, requires developing catalysts with optimal binding strengths for these intermediates. Here, unconventional hexagonal close-packed (HCP) high-entropy alloy (HEA) atomic layers are prepared composed five platinum-group metals to enhance HER synergistically. The breakthrough is made by layer-by-layer heteroepitaxial deposition...
Journal Article Transformation and Deformation Characterization of NiTiHf NiTiAu High Temperature Shape Memory Alloys Get access L Casalena, Casalena Department Materials Science & Engineering, The Ohio State University, Columbus, OH, USA Search for other works by this author on: Oxford Academic Google Scholar D R Coughlin, Coughlin USALos Alamos National Laboratory, Los Alamos, NM, F Yang, Yang X Chen, Chen H Paranjape, Paranjape Y Gao, Gao Noebe, Noebe NASA Glenn Research Center,...
Abstract Catalytic CO 2 reduction to fuels and chemicals is a major pursuit in reducing greenhouse gas emissions. One approach utilizes the reverse water‐gas shift reaction, followed by Fischer–Tropsch synthesis, iron well‐known candidate for this process. Some attempts have been made modify improve its reactivity, but resulted limited success. Now, using ruthenium–iron oxide colloidal heterodimers, close contact between two phases promotes of via proximal hydrogen spillover effect, leading...
Shape memory alloys (SMAs) are 'smart' materials which able to change their shape in response changes temperature.This unusual behavior arises from a solid-state phase transformation, can be utilized generate force.These extraordinary properties have made them of great interest the automotive and aerospace industries for potential light-weight actuator applications.An is any mechanism converts energy, such as heat or electricity, into motion.SMAs outshine traditional actuating systems...
As a direct bandgap Group IV alloy, metastable Ge1–xSnx (x > ∼0.1) is an extremely interesting optical and electronic material. Germanium core/germanium-tin coaxial heterostructures offer opportunity to study Sn surface segregation from alloys in the technologically composition range that exceeds maximum solid solubility of tin diamond cubic structure germanium. We investigate annealing characteristics germanium-tin native oxide for contents 2 12 at% initial conditions ranging intentional...
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Precipitate microstructure in the B2 parent phase is known to have profound impacts on properties of NiTi-based high temperature shape memory alloys (HTSMAs), including martensitic transformation (MT) start Ms, temperature- and stress-hysteresis, work output, dimensional stability functional fatigue resistance. In order understand underlying mechanisms hence optimize aging heat treatments achieve desired properties, we systematically investigate both mechanical chemical effects associated...
An abstract is not available for this content so a preview has been provided. As you have access to content, full PDF via the 'Save PDF' action button.