A5034450027- Titanium Alloys Microstructure and Properties
- Advanced Materials Characterization Techniques
- Magnetic and transport properties of perovskites and related materials
- Intermetallics and Advanced Alloy Properties
- Advanced Condensed Matter Physics
- Additive Manufacturing Materials and Processes
- Metal and Thin Film Mechanics
- High Temperature Alloys and Creep
- Microstructure and Mechanical Properties of Steels
- Chalcogenide Semiconductor Thin Films
- Multiferroics and related materials
- Quantum Dots Synthesis And Properties
- Electron and X-Ray Spectroscopy Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- nanoparticles nucleation surface interactions
- Skin Protection and Aging
- Semiconductor materials and interfaces
- High Entropy Alloys Studies
- Dyeing and Modifying Textile Fibers
- Electronic and Structural Properties of Oxides
- Supercapacitor Materials and Fabrication
- Nuclear Materials and Properties
- Metallurgical and Alloy Processes
- Magnetic Properties of Alloys
- Aluminum Alloy Microstructure Properties
Durham University
2020-2024
The Ohio State University
2004-2016
The Open University
1993
Valparaiso University
1899
Yale University
1899
University of Minnesota
1899
Columbia University
1899
National Ilan University
1899
Capital University
1899
University of Chicago
1899
Abstract Decades of research has been focused on improving the high-temperature properties nickel-based superalloys, an essential class materials used in hot section jet turbine engines, allowing increased engine efficiency and reduced CO 2 emissions. Here we introduce a new ‘phase-transformation strengthening’ mechanism that resists creep deformation where specific alloying elements inhibit deleterious mode nanotwinning at temperatures above 700 °C. Ultra-high-resolution structure...
Fatigue crack initiation in titanium alloys is typically accompanied by the formation of planar, faceted features on fracture surface. In present study, quantitative tilt fractography, electron backscatter diffraction (EBSD), and focused ion beam (FIB) have been used to provide a direct link between facet topography underlying microstructure, including crystallographic orientation. contrast previous studies, which mainly α-phase crystal orientation spatial facets, analysis concentrates that...
We report growth of Sr${}_{2}$CrReO${}_{6}$ epitaxial films with 99$%$ Cr/Re ordering and crystalline perfection comparable to those high-quality semiconductor films. The show a Curie temperature 508 K saturation magnetization 1.29 ${\ensuremath{\mu}}_{\mathrm{B}}$ per formula unit, which confirms the presence strong spin-orbit coupling. Unexpectedly, electrical transport optical absorption measurements indicate that is band gap 0.21 eV. unique combination high ferrimagnetism...
The crystal structure of Sb2Se3 gives rise to unique properties that cannot otherwise be achieved with conventional thin-film photovoltaic materials, such as CdTe or Cu(In,Ga)Se2. It has previously been proposed grain boundaries can made benign provided only the weak van der Waals forces between (Sb4Se6)n ribbons are disrupted. Here, it is shown non-radiative recombination suppressed even for cutting across ribbons. This due a remarkable self-healing process, whereby atoms at boundary relax...
Electron energy-loss spectroscopy (EELS) and energy dispersive x-ray (EDX) analysis in scanning transmission electron microscopy (STEM) have the ability to produce elemental maps of a specimen at atomic resolution. In this paper we present EELS EDX for oxygen K shell $\ensuremath{\langle}001\ensuremath{\rangle}$ strontium titanate. The results initially seem be anomalous since substantially more signal is obtained when STEM probe above columns containing both titanium than it those only...
Nanoscale composite precipitates of Alloy 718 have been investigated with both high-resolution scanning transmission electron microscopy and phase field modeling. Chemical analysis via energy-dispersive x-ray spectroscopy allowed for the differentiation γ′ γ″ particles, which is not otherwise possible through traditional Z-contrast methods. Phase modeling was applied to determine stress distribution elastic interaction around between respectively, it determined that a particle (of γ″) has an...
Mechanical properties of α/β Ti alloys are closely related to their microstructure. The complexity the microstructural features involved makes it rather difficult develop models for predicting these alloys. Advances in stereology and microscopy permit rapid characterization various including Widmanstätten α-laths, grain sizes, shapes, colony structures volume fractions different phases. This research documents procedures characterizing alloys, use three-dimensional serial sectioning...
Synopsis Objective Damage to hair from UV exposure has been well reported in the literature and is known be a highly complex process involving initiation via absorption of light followed by formation propagation reactive oxygen species ( ROS ). The objective this work was understand these mechanisms, explain role copper accelerating identify strategies reduce damage caused species. Methods location measured Transmission electron microscopy–( TEM ) X‐ray energy dispersive spectroscopy XEDS...
We demonstrate that few layer graphene (FLG), formed by high-shear exfoliation into an aqueous suspension, can be successfully employed as 'active' conductive additive in flexible activated carbon-based electric double capacitor (supercapacitor) electrodes if introduced a novel 'vacuum infiltration' technique. The effectiveness of the FLG optimised tailoring its size distribution and loading. It is found best performance achieved using with broadest and, moreover, larger effective over range...
Grain boundaries play an important role in the efficiency of thin-film photovoltaics, where absorber layer is invariably polycrystalline. Density-functional-theory simulations have previously identified a “self-healing” mechanism <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><a:msub><a:mi>Sb</a:mi><a:mn>2</a:mn></a:msub><a:msub><a:mi>Se</a:mi><a:mn>3</a:mn></a:msub></a:math> that passivates grain boundaries. During “self-healing,” extensive...
Extended abstract of a paper presented at Microscopy and Microanalysis 2004 in Savannah, Georgia, USA, August 1–5, 2004.
Journal Article 15 Years of Characterizing Titanium Alloys' Microstructure by DBFIB Get access R E A Williams, Williams Department Materials Science and Engineering, Center for the Accelerated Maturation Materials, The Ohio State University, 2041 College Road, Columbus, OH 43210 Search other works this author on: Oxford Academic Google Scholar D Huber, Huber J Sosa, Sosa H L Fraser Microscopy Microanalysis, Volume 20, Issue S3, 1 August 2014, Pages 322–323,...
Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 – 8, 2013.
Extract HTML view is not available for this content. However, as you have access to content, a full PDF via the ‘Save PDF’ action button. Extended abstract of paper presented at Microscopy and Microanalysis 2005 in Honolulu, Hawaii, USA, July 31--August 4,
Investigation of Possible Nucleation Mechanisms for Producing an Ultra-Refined Alpha Phase Microstructure in Beta Titanium Alloys Using High-Resolution Electron Microscopy and 3D Atom Probe Tomography - Volume 20 Issue S3