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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The effect of nickel and nitrogen on void formation in vanadium

Lott, Randy George. January 1979 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 176-182).
2

The relationship between microstructure and mechanical behavior in beta titanium-vanadium alloys

Paris, Henry Grady 08 1900 (has links)
No description available.
3

Processing and properties of Ti-6A1-4V hollow sphere foams from hydride powder

Hardwicke, Canan Uslu 08 1900 (has links)
No description available.
4

Precipitate characterization and stability in V-based alloys for nuclear fusion reactors

Impagnatiello, Andrea January 2016 (has links)
The aim of this work was to investigate the precipitation and stability of nm-sized Ti oxides in vanadium-based alloys, a prime candidate material for future nuclear fusion reactors based on the magnetic confinement of the plasma. Fusion energy reproduces the nuclear reactions occurring in stars. It can potentially produce more energy than current nuclear fission power plants, and it is meant to be a solution to the clash of today's increasing energy demand with the continuous decrease of fossil-based energy sources, whose use is harmful for the environment. The operating conditions in a fusion reactor will be unprecedented in terms of ultra-high temperatures, stresses, radiation fields and very corrosive media. Only a limited number of materials may be able to withstand such combination of harsh environmental conditions, and vanadium-based alloys are among them. Recent research efforts have identified V-4Cr-4Ti as the most promising vanadium-based alloy for application in the first wall of future fusion nuclear reactors such as DEMO and beyond. The presence of TiO-type precipitates, containing relatively small amounts of C and N, strongly influences the final mechanical properties and radiation resistance of the alloy. Therefore, a thorough understanding of the precipitate structure and evolution at both relatively high temperatures and radiation dose levels is primordial to predict and optimise the final performance of the structural component in the fusion reactor. This thesis is written in alternative format and collects one article already published in Scripta Materialia, and two additional articles to be submitted to peer-review scientific journals. Atomic resolution imaging of the precipitates, coupled with chemical analysis, constitutes the main body of the first article: a novel intergrowth of the fcc Ti oxide in the bcc V matrix is revealed at the precipitate/matrix interface. The evolution of the vacancies present in the TiO precipitates above 400°C, together with the recovery of dislocations in the matrix and the formation of extra precipitates, is studied in the second article by positron annihilation spectroscopy and micro-hardness measurements. The formation of additional precipitates below 400°C induced by radiation is assessed in the third article using proton irradiation as a surrogate of neutron damage. The structure of those additional precipitates and of the dislocation loops induced by the proton bombardment is characterized by advanced analytical electron microscopy.
5

An investigation of selected properties of as-cast, V-Ti-Fe alloys /

Johnsen, John LeRoy. January 1985 (has links)
Thesis (Ph. D.)--Oregon Graduate Center, 1985.
6

The chemical activities of iron and vanadium in binary iron-vanadium alloys and the vapor pressures of pure cobalt, iron, and vanadium /

Saxer, Richard Karl January 1962 (has links)
No description available.
7

Electropolishing of Ti-6A1-4V surgical implant alloy and its effect on corrosion behavior

Hung, Lie-chung 08 1900 (has links)
No description available.
8

A continuum surface layer effect in polycrystalline aggregates /

Laurent, Michel P., January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 250-253). Also available via the Internet.
9

Theory and modeling of microstructural evolution in polycrystalline materials solute segregation, grain growth and phase transformation /

Ma, Ning, January 2005 (has links)
Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Document formatted into pages; contains xvii, 181 p.; also includes graphics (some col.). Includes bibliographical references (p. 168-181). Available online via OhioLINK's ETD Center
10

Low temperature lattice instability in single and polycrystalline ZrV2.

Levinson, Mark. January 1978 (has links)
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 1978 / Vita. / Includes bibliographical references. / Sc. D. / Sc. D. Massachusetts Institute of Technology, Department of Materials Science and Engineering

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