Works (30)

Updated: July 5th, 2023 15:44

2018 journal article

Numerical modeling of specimen geometry for quantitative energy dispersive X-ray spectroscopy

ULTRAMICROSCOPY, 184, 100–108.

By: W. Xu n, J. Dycus n & J. LeBeau n

author keywords: Energy dispersive X-ray spectroscopy (EDS); 3D specimen geometry; Multiple EDS detectors; Super-X; Absorption correction; Error counter-balancing
topics (OpenAlex): X-ray Spectroscopy and Fluorescence Analysis; Electron and X-Ray Spectroscopy Techniques; Advanced X-ray and CT Imaging
TL;DR: A numerical, three-dimensional approach to model the geometry of general specimens and its influence on quantification when using single and multiple detector configurations shows that the model correctly predicts the asymmetric nature of X-ray counts and ratios. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2017 journal article

On the origin and behavior of irradiation-induced c-component dislocation loops in magnesium

ACTA MATERIALIA, 131, 457–466.

author keywords: In situ transmission electron microscopy; C-component dislocation loop; Atomic structure; Magnesium; Stacking faults
topics (OpenAlex): Microstructure and mechanical properties; Magnesium Alloys: Properties and Applications; Fusion materials and technologies
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

A numerical model for multiple detector energy dispersive X-ray spectroscopy in the transmission electron microscope

ULTRAMICROSCOPY, 164, 51–61.

By: W. Xu n, J. Dycus n, X. Sang n & J. LeBeau n

author keywords: Energy dispersive X-ray spectroscopy (EDS); Super-X; Detector collection angle; X-ray absorption correction; Shadowing; Spurious X-rays
topics (OpenAlex): X-ray Spectroscopy and Fluorescence Analysis; Electron and X-Ray Spectroscopy Techniques; Nuclear Physics and Applications
TL;DR: A numerical approach to model a four quadrant energy dispersive X-ray spectrometer in the transmission electron microscope shows that this comprehensive model accurately predicts absolute counts and intensity ratios as a function of specimen tilt and position. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2016 journal article

Direct conversion of h-BN into c-BN and formation of epitaxial c-BN/diamond heterostructures

Journal of Applied Physics, 119(18).

By: J. Narayan, A. Bhaumik & W. Xu

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Effect of nano-oxide particle size on radiation resistance of iron-chromium alloys

JOURNAL OF NUCLEAR MATERIALS, 469, 72–81.

author keywords: He bubble; Irradiation; Nano-oxide; Void swelling
topics (OpenAlex): Nuclear Materials and Properties; Fusion materials and technologies; Nuclear reactor physics and engineering
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

Grain size effect on radiation tolerance of nanocrystalline Mo

SCRIPTA MATERIALIA, 123, 90–94.

author keywords: Radiation damage; Body-centered cubic (bcc); Nanocrystalline; Grain size effect; Magnetron sputtering
topics (OpenAlex): Fusion materials and technologies; Ion-surface interactions and analysis; Nuclear Materials and Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2016 journal article

In-situ real-space imaging of single crystal surface reconstructions via electron microscopy

APPLIED PHYSICS LETTERS, 109(20).

By: W. Xu n, P. Bowes n, E. Grimley n, D. Irving n & J. LeBeau n

topics (OpenAlex): Electronic and Structural Properties of Oxides; Semiconductor materials and devices; Electron and X-Ray Spectroscopy Techniques
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2016 journal article

Influence of experimental conditions on atom column visibility in energy dispersive X-ray spectroscopy

Ultramicroscopy, 171, 1–7.

By: J. Dycus, W. Xu, X. Sang, A. D'Alfonso, Z. Chen, M. Weyland, L. Allen, S. Findlay, J. LeBeau

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Quantitative atomic resolution elemental mapping via absolute-scale energy dispersive X-ray spectroscopy

ULTRAMICROSCOPY, 168, 7–16.

By: Z. Chen*, M. Weyland*, X. Sang n, W. Xu n, J. Dycus n, J. LeBeau n, A. D'Alfonso*, L. Allen*, S. Findlay*

author keywords: Scanning transmission electron microscopy (STEM); Energy dispersive X-ray (EDX) spectroscopy; Atomic-resolution mapping; Elemental quantification
topics (OpenAlex): Electron and X-Ray Spectroscopy Techniques; X-ray Spectroscopy and Fluorescence Analysis; Electronic and Structural Properties of Oxides
TL;DR: Quantitative agreement on an absolute scale is demonstrated between experiment and simulation for two-dimensional, atomic-resolution elemental mapping via energy dispersive X-ray spectroscopy, and it is emphasized that simple column-by-column analysis requires a choice of sample thickness that compromises between being thick enough to yield a good signal-to-noise ratio and thin enough that the overwhelming majority of the EDX signal derives from the column on which the probe is placed, despite strong electron scattering effects. (via Semantic Scholar)
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Source: Web Of Science
Added: August 6, 2018

2016 journal article

Structure and chemistry of passivated SiC/SiO2 interfaces

APPLIED PHYSICS LETTERS, 108(20).

By: J. Dycus n, W. Xu n, D. Lichtenwalner*, B. Hull*, J. Palmour* & J. LeBeau n

topics (OpenAlex): Silicon Carbide Semiconductor Technologies; Semiconductor materials and devices; Thin-Film Transistor Technologies
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Source: Web Of Science
Added: August 6, 2018

2015 journal article

Alloying effect on grain-size dependent deformation twinning in nanocrystalline Cu-Zn alloys

PHILOSOPHICAL MAGAZINE, 95(3), 301–310.

By: X. Ma n, W. Xu n, H. Zhou n, J. Moering n, J. Narayan n & Y. Zhu n

author keywords: grain size; nanomaterials; alloys; stacking-fault energy; deformation twinning
topics (OpenAlex): Microstructure and mechanical properties; Magnesium Alloys: Properties and Applications; Aluminum Alloys Composites Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Effect of Ag on interfacial segregation in Mg-Gd-Y-(Ag)-Zr alloy

ACTA MATERIALIA, 95, 20–29.

By: H. Zhou, G. Cheng n, X. Ma n, W. Xu n, S. Mathaudhu*, Q. Wang*, Y. Zhu n

author keywords: Magnesium alloys; Interface; Segregation; HAADF-STEM; Crystal structure
topics (OpenAlex): Magnesium Alloys: Properties and Applications; Hydrogen Storage and Materials; Aluminum Alloys Composites Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Finite element simulation and experimental investigation on homogeneity of Mg-9.8Gd-2.7Y-0.4Zr magnesium alloy processed by repeated-upsetting

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 225, 310–317.

author keywords: Severe plastic deformation (SPD); Repetitive upsetting (RU); Finite element modeling (FEM); Magnesium alloys; Homogeneity
topics (OpenAlex): Magnesium Alloys: Properties and Applications; Aluminum Alloys Composites Properties; Microstructure and mechanical properties
Source: Web Of Science
Added: August 6, 2018

2015 journal article

Influence of scandium addition on the high-temperature grain size stabilization of oxide-dispersion-strengthened (ODS) ferritic alloy

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 636, 565–571.

By: L. Li n, W. Xu n, M. Saber n, Y. Zhu n, C. Koch n & R. Scattergood n

author keywords: Mechanical alloying; Oxide-dispersion-strengthened alloy; Thermal stability; Sc stabilization
topics (OpenAlex): Fusion materials and technologies; Nuclear Materials and Properties; High-Temperature Coating Behaviors
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Long-term stability of 14YT-4Sc alloy at high temperature

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 647, 222–228.

By: L. Li n, W. Xu n, M. Saber*, Y. Zhu n, C. Koch n & R. Scattergood n

author keywords: Nanocrystalline ODS ferritic alloys; Grain growth; Sc stabilization; long-term stability
topics (OpenAlex): Fusion materials and technologies; Hydrogen embrittlement and corrosion behaviors in metals; Nuclear Materials and Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Microstructures and Stabilization Mechanisms of Nanocrystalline Iron-Chromium Alloys with Hafnium Addition

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 46A(9), 4394–4404.

By: W. Xu n, L. Li n, M. Saber n, C. Koch n, Y. Zhu n & R. Scattergood n

topics (OpenAlex): Advanced Materials Characterization Techniques; Microstructure and mechanical properties; Microstructure and Mechanical Properties of Steels
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Strain hardening and ductility in a coarse-grain/nanostructure laminate material

SCRIPTA MATERIALIA, 103, 57–60.

By: X. Ma n, C. Huang*, W. Xu n, H. Zhou n, X. Wu* & Y. Zhu n

author keywords: Laminate structure; Strain hardening; Ductility; Nanostructure; Interface
topics (OpenAlex): Microstructure and mechanical properties; Aluminum Alloys Composites Properties; Surface Treatment and Residual Stress
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2015 journal article

Strong and Conductive Dry Carbon Nanotube Films by Microcombing

SMALL, 11(31), 3830–3836.

By: L. Zhang n, X. Wang n, W. Xu n, Y. Zhang*, Q. Li*, P. Bradford n, Y. Zhu n

author keywords: carbon nanotube films; carbon nanotubes; electrical properties; mechanical properties; microstructures
topics (OpenAlex): Carbon Nanotubes in Composites; Mechanical and Optical Resonators; Nanopore and Nanochannel Transport Studies
TL;DR: A novel approach to fabricate aligned CNT films with a uniform structure using sharp surgical blades with microsized features at the blade edges to comb single layer of CNT sheet, which requires less rigorous process control and can construct C NT films with reproducible properties. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

A new metastable precipitate phase in Mg-Gd-Y-Zr alloy

PHILOSOPHICAL MAGAZINE, 94(21), 2403–2409.

author keywords: magnesium alloys; metastable phases; base-centred orthorhombic structure; phase transformations
topics (OpenAlex): Magnesium Alloys: Properties and Applications; Hydrogen Storage and Materials; Metal and Thin Film Mechanics
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

High-temperature grain size stabilization of nanocrystalline Fe-Cr alloys with Hf additions

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 613, 289–295.

By: L. Li n, M. Saber n, W. Xu n, Y. Zhu n, C. Koch n & R. Scattergood n

author keywords: Mechanical alloying; Nanocrystalline Fe-Cr alloys; Grain growth; Thermal stability
topics (OpenAlex): Microstructure and mechanical properties; Metal Alloys Wear and Properties; Microstructure and Mechanical Properties of Steels
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Nano ZrO2 particles in nanocrystalline Fe-14Cr-1.5Zr alloy powders

JOURNAL OF NUCLEAR MATERIALS, 452(1-3), 434–439.

By: W. Xu n, L. Li n, M. Saber n, C. Koch n, Y. Zhu n & R. Scattergood n

topics (OpenAlex): Fusion materials and technologies; Nuclear Materials and Properties; High-Temperature Coating Behaviors
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Nucleation and growth mechanism of Ag precipitates in a CuAgZr alloy

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 610, 85–90.

author keywords: Precipitation; Ledge; Interfaces; Copper alloys; Precipitate alignment
topics (OpenAlex): Copper Interconnects and Reliability; Microstructure and mechanical properties; Aluminum Alloy Microstructure Properties
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2014 journal article

Size effect of primary Y2O3 additions on the characteristics of the nanostructured ferritic ODS alloys: Comparing as-milled and as-milled/annealed alloys using S/TEM

JOURNAL OF NUCLEAR MATERIALS, 452(1-3), 223–229.

By: M. Saber n, W. Xu n, L. Li n, Y. Zhu n, C. Koch n & R. Scattergood n

topics (OpenAlex): Nuclear materials and radiation effects; Fusion materials and technologies; Nuclear Materials and Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Dislocations with edge components in nanocrystalline bcc Mo

Journal of Materials Research, 28(13), 1820–1826.

Contributors: G. Cheng n, W. Xu n, W. Jian n, H. Yuan n, M. Tsai n, Y. Zhu n, Y. Zhang*, P. Millett*

topics (OpenAlex): Microstructure and mechanical properties; Metal and Thin Film Mechanics; Boron and Carbon Nanomaterials Research
Sources: NC State University Libraries, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Effect of carbon nanotube length on thermal, electrical and mechanical properties of CNT/bismaleimide composites

CARBON, 53, 145–152.

By: X. Wang n, Q. Jiang n, W. Xu n, W. Cai*, Y. Inoue* & Y. Zhu n

Contributors: X. Wang n, Q. Jiang n, W. Xu n, W. Cai*, Y. Inoue* & Y. Zhu n

topics (OpenAlex): Carbon Nanotubes in Composites; Thermal properties of materials; Graphene research and applications
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

In-situ atomic-scale observation of irradiation-induced void formation

NATURE COMMUNICATIONS, 4.

topics (OpenAlex): Fusion materials and technologies; Nuclear materials and radiation effects; Nuclear Materials and Properties
TL;DR: In-situ atomic-scale observation of the nucleation and growth of voids in hexagonal close-packed magnesium under electron irradiation shows that the initial growth in length is controlled by slow nucleation kinetics of vacancy layers on basal facets and anisotropic vacancy diffusivity, and the subsequent thickness growth is driven by thermodynamics to reduce surface energy. (via Semantic Scholar)
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UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2013 journal article

Morphology, structure and composition of precipitates in Al0.3CoCrCu0.5FeNi high-entropy alloy

INTERMETALLICS, 32, 329–336.

By: M. Tsai n, H. Yuan n, G. Cheng n, W. Xu n, K. Tsai*, C. Tsai*, W. Jian n, C. Juan* ...

Contributors: M. Tsai n, H. Yuan n, G. Cheng n, W. Xu n, K. Tsai*, C. Tsai*, W. Jian n, C. Juan* ...

author keywords: Precipitates; Microstructure; Widmanstatten morphology; Electron microscopy; transmission
topics (OpenAlex): High Entropy Alloys Studies; High-Temperature Coating Behaviors
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Physics and model of strengthening by parallel stacking faults

Applied Physics Letters, 103(13), 133108.

By: W. Jian n, G. Cheng n, W. Xu n, C. Koch n, Q. Wang*, Y. Zhu n, S. Mathaudhu n

topics (OpenAlex): Magnesium Alloys: Properties and Applications; Aluminum Alloys Composites Properties; Microstructure and mechanical properties
Sources: Web Of Science, Crossref, NC State University Libraries
Added: August 6, 2018

2013 journal article

Significant hardening due to the formation of a sigma phase matrix in a high entropy alloy

INTERMETALLICS, 33, 81–86.

By: M. Tsai n, H. Yuan n, G. Cheng n, W. Xu n, W. Jian n, M. Chuang*, C. Juan*, A. Yeh* ...

Contributors: M. Tsai n, H. Yuan n, G. Cheng n, W. Xu n, W. Jian n, M. Chuang*, C. Juan*, A. Yeh*, S. Lin*, Y. Zhu n

author keywords: Age-hardening; Precipitates; Electron microscopy, transmission
topics (OpenAlex): High Entropy Alloys Studies; High-Temperature Coating Behaviors; Additive Manufacturing Materials and Processes
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2013 journal article

Twinning in cryomilled nanocrystalline Mg powder

PHILOSOPHICAL MAGAZINE LETTERS, 93(8), 457–464.

author keywords: twinning; magnesium; nanocrystalline; cryomilling
topics (OpenAlex): Magnesium Alloys: Properties and Applications; Microstructure and mechanical properties; Aluminum Alloys Composites Properties
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

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