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Thursday, July 30, 2020 | History

3 edition of Advancement of X-ray microscopy technology and its application to metal solidification studies found in the catalog.

Advancement of X-ray microscopy technology and its application to metal solidification studies

Advancement of X-ray microscopy technology and its application to metal solidification studies

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • X ray sources.,
  • Microscopy.,
  • X rays.,
  • Imaging techniques.,
  • Radiography.,
  • Image contrast.

  • Edition Notes

    StatementWilliam F. Kaukler, Peter A. Curreri.
    Series[NASA contractor report] -- NASA-CR-204618., NASA contractor report -- NASA CR-204618.
    ContributionsCurreri, Peter A., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15505903M

    Advanced Energy Materials and Research July , (technology, solidification), semi-solid casting and metal matrix composites produced by semi-solid casting, using nano-material for re-enforcement (surface and bulk nano-composites). For his studies, he uses advanced X-ray and neutron scattering techniques and multiscale modeling Date: Nickel-based Inconel is a very good candidate for selective laser melting (SLM). During the SLM process, Inconel develops a complex and heterogeneous microstructure. A deep understanding of the microstructural features of the as-built SLM material is essential for the design of a proper post-process heat treatment. In this study, the microstructure of as-built SLM Inconel was Cited by: 6.

    This book explores the application of external physical fields to the solidification processing of metallic alloys. Leading academics from around the world present comprehensive and critical reviews on state-of-the-art research and discuss possible future directions. coupled with X-ray scattering and spectroscopy methodologies, as it can provide images with single atom chemical, bonding, magnetic, etc. information. Progress in synchrotron science is paralleled by important advances in other techniques and methods as the development of X-ray science at XFELs, and progress in optical and electron Size: 3MB.

    The changes in the elemental concentrations of calcium and silicon in both solid samples and liquid leachates were measured by using X – ray fluorescence method. Experimental studies confirmed the silica fume based concrete samples were found out to have the best performance in terms of both silicon and calcium ions leaching. The morphology and thickness, elemental analysis, phases, roughness and wettability for as-plated and heat-treated nanocomposite were determined by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, atomic force microscopy and contact angle measurements, respectively.


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Advancement of X-ray microscopy technology and its application to metal solidification studies Download PDF EPUB FB2

Get this from a library. Advancement of X-ray microscopy technology and its application to metal solidification studies. [William F Kaukler; Peter A Curreri; United States.

National Aeronautics and. Get this from a library. Advancement of X-ray microscopy technology and it's [sic] application to metal solidification studies. [William F Kaukler; Peter A Curreri; United States. National Aeronautics and.

X-ray imaging has been established as a method of choice for in situ and real-time studies of solidification microstructure formation in metallic alloys, with spatio-temporal resolutions at the Author: Jiawei Mi. Science and Engineering of Casting Solidification; pp investigated by optical microscopy and energy dispersive X-ray tomography.

are internal factors related to the nature of the. Electron Microscopy of Heavy Metal Waste in Cement Matrices Ivey, D.G., and others. of the Journal of Hazardous Materials is dedicated to peer-reviewed publications on recent research findings in the advancement of solidification and stabilization technologies that incorporate cement binders.

Treated and untreated samples were. Recently, synchrotron diffraction has been used to observe insitu the solidification behavior and other phase transformations in welds []. For example, in Fe-C-Al-Mn steel under normal conditions, the primary phase to form from the liquid is d-ferrite as observed by time-resolved x-ray diffraction (TRXRD).

It covers the entire spectrum of nanoscience and technology: introduction, terminology, historical perspectives of this domain of science, unique and widely differing properties, advances in the various synthesis, consolidation and characterization techniques, applications of nanoscience and technology and emerging materials and technologies.

Research interests focus on modeling, monitoring, control, and optimization of precision manufacturing, specifically metal machining and additive manufacturing.

Supervised over 90 post-doctoral studies, Ph.D. dissertations, and M.S. theses. Authored in excess of book chapters, archival journal papers, and professional conference articles. This advancement in technology has occurred through evolution in three areas, which may include low-energy resolution, sensor size, X-ray detection efficiency, and sensitivity of EDS detectors.

The EDX analysis of nanomaterials, newer materials, and light elements from boron to fluorine and lithium are some examples of technology by: 2. X-ray diffraction studies. The phase composition of the HA coatings documented was considerably different because of various process parameters of plasma spray and high thermal exchange between the plasma zone, powder particles, and the substrate metal.

When the powder particles are injected into the plasma jet, the surface of the powder. In all of these studies, the consortium will integrate (3D) quantitative transmission electron microscopy and X-ray spectroscopy with density functional calculations of the structural stability and optoelectronic properties as well as with accelerated molecular dynamics for chemical reactivity.

Introduction. Titanium (Ti: atomic number 22) is a lustrous transition element and is the 9th most abundant element on earth’s crust having a specific gravity of g/cm 3 and a density of g/cm is the 4th most widely available structural material after aluminium (Al), iron (Fe) and magnesium (Mg) and is relatively light when compared with conventionally employed engineering.

Unlocking the full performance capabilities of battery materials will require a thorough understanding of the underlying electrochemical mechanisms at a variety of length scales. A broad arsenal of X-ray microscopy and mapping techniques is now available to probe these processes down to the nanoscale.

The tunable nature of X-ray sources allows for the extraction of chemical states through Cited by: Associated with the focus of a line emission X-ray source, hard X-rays with energy at 8 keV can resolve 30 nm lines of a gold spoke pattern by using SR X-ray imaging and 50 nm thick Cu tracks on a Si substrate by using LB X-ray imaging.

However, it takes minutes for a single projection and days for a 3D tomography with such LB by:   Short-wavelength free-electron laser sources and science: a review * E A Seddon 1,2,3, J A Clarke 1,3, D J Dunning 1,3, C Masciovecchio 4, C J Milne 5, F Parmigiani 4,6,7, D Rugg 8, J C H Spence 9, N R Thompson 1,3, K U S M Vi J S Wark 11 and W Wurth 12Cited by: It has a camera for crystallographic orientation imaging, a deformation stage capable of lbs force, hot stages capable of temperatures up to C, and a cooling stage that goes down to C.

An attached Noran X-ray system permits qualitative and quantitative EDX spectroscopy, X-ray mapping and line scans. Surface Science Laboratories.

Studies on X-ray diffraction microscopy. NASA Astrophysics Data System (ADS) Miao, Huijie. This dissertation includes three main parts: studies on coherence requirements for the d.

We develop models of welding and 3D printing that are useful to produce defect free, structurally sound, reliable parts. Our models compute the most important factors that affect the processing, structure and properties of alloys such as the temperature and velocity fields, cooling rates and solidification parameters.

They solve tens of billions of equations quickly in inexpensive computers. Brookhaven has two synchrotron radiation storage rings—an ultraviolet ring that runs at million electron volts (MeV) and provides radiation up to the soft x-ray part of the spectrum, and a high-brightness x-ray ring that runs at billion electron volts (GeV) and provides the harder part of.

X-ray diffraction: powder diffraction, phase identification, Scherrer formula, strain and grain size determination 2 Fundamentals of Imaging: magnification, resolution, depth of field and depth of focus, aberration and astigmatism 1 Optical microscopy, stereology basics and quantitative analysis 2.

The mission of the Metallurgy Division is to promote U.S. innovation and industrial competitiveness in the development and use of materials by advancing measurement science, standards, and technology of metals-based systems, in ways that enhance economic security and improve our quality of life.

The.Coherent X-ray diffraction imaging is a rapidly advancing form of lensless microscopy. The phase information of the diffraction pattern is embedded in a sufficiently sampled coherent diffraction pattern. Using advanced computational methods, this diffraction pattern can be inverted to produce an image of a sample with diffraction-limited resolution.Along with the x-ray diffraction studies, electrical conduc- humidity — to the XSD transmission x-ray microscopy beamline ID-C at APS, where they performed x-ray molten metal flow and solidification, nonequilibrium phase transitions, and other various phe.