NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 22 for “"Laves-Phase"”.

  1. Modelling of Carbide and Laves Phase Precipitation in 9-12 wt% Chromium Steels

    Robson, Joseph DouglasUniversity of Cambridge1997

    cambridge Repository record

  2. Compositional influences on the microstructures, phase stability, and mechanical properties of TiCr₂ laves phase alloys

    Chen, Katherine C. (Katherine Cheeyung)Massachusetts Institute of Technology1996

    Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.

    mit Repository record

  3. Modifying the magnetic properties of Laves phase intermetallic multilayers and films by nano-patterning and ion implantation

    Buckingham, Andrew RogerUniversity of Southampton2010

    Since the pioneering work of Kneller & Hawig and Skomski & Coey some 20 years ago, the topic of exchange springs has received considerable attention. Exchange springs, systems where thin hard and soft magnetic layers are alternately arranged in multilayer stacks, provide great potential in …

    soton Repository record

  4. Lightweight Intermetallics with Laves Structures as Potential Hydrogen Storage Materials

    Billet, BeauThe Ohio State University2013

    … requirements. Intermetallic compounds with Laves structures in the formula of AB2 have long been known to store hydrogen in their interstitial sites to serve as reversible hydrogen storage materials (A and B are metallic elements). They have the potential to be hydrided to a maximum of ~ …

    ohiolink Repository record

  5. Microstructure and mechanical behavior of metastable beta type titanium alloys

    Rabadia, Chirag DhirajlalEdith Cowan University, Research Online, Perth, Western Australia2020

    … quantity of Cr is enough to retain a single β phase. Young’s moduli of the Ti-27Nb-7Fe-xCr alloys decrease from 116 GPa (in Ti-27Nb-7Fe) to 72 GPa (in Ti-27Nb-7Fe-8Cr) as the β stability improves. The Ti-33Zr-xFe-yCr alloys, except Ti- 33Zr-3Fe-2Cr alloy, demonstrate a C15 type Laves phase and …

    edithcowan Repository record

  6. Ni-Al-Ta alloys for high temperature abrasive coatings

    McGregor, MeganUniversity of Cambridge2019

    … particles embedded in a NiCoCrAlY anchor phase. Previous work has shown that at the operating temperatures achieved in the high-pressure turbine, the NiCoCrAlY is unable to retain the embedded cBN particles under abrasion. A new anchor phase system based on the intermetallic NiAl, …

    cambridge Repository record

  7. Computational Modeling Of High-Performance Nickel-Metal Hydride Battery Materials

    Wong, Diana Felicia2016

    … of the active material, including multiple phases, defects, and structural and compositional disorder. The contributions of such subtle defects and the difference with the bulk structure can be difficult to discern experimentally. Ab initio calculations such as the ones based on density …

    wayne-thes Repository record

  8. Microstructural Evolution in Refractory Metal Multi-Component Alloy Systems

    Yang, Shang-TeUniversity of Cambridge2025

    … diffracted-spot tracing approach to follow phase evolution during controlled thermal histories. Across AlTaTiZr and the canonical AlMoNbTaTiZr alloy, the method resolves the sequence of phase separation, ordering and subsequent transformations, provides transformation temperatures, and …

    cambridge Repository record

  9. A resonant ultrasound spectroscopy study of hydrogen-absorbing intermetallic compounds

    Atteberry, Jennifer Eve, author, Leisure, Robert, advisor, Eykholt, Richard E., committee member, Patton, Carl E., committee member, Migliori, Albert, committee member, Maciel, Gary E., committee memberColorado State University. Libraries2004

    … lattice was undertaken, on two different Cl5 Laves-phase compounds. These results have been obtained by determining the ultrasonic attenuation as a function of temperature from low temperatures (~0.5 K) up to room temperature and above. The hydrogen-absorbing intermetallic compounds, TiCr1.8 …

    colostate Repository record

  10. Point contact studies of rare earth-transition metal compounds

    Morrison, Christopher GlenUniversity of Southampton2009

    … beam epitaxy (MBE) deposited RFe2 (R = Dy,Y,Er) Laves phase intermetallic films was determined, and found to be close to that of Fe. This suggests that the spin transport behaviour in these materials is dominated by the Fe sub-lattice. Preliminary evidence for spin transfer torque effects in an …

    soton Repository record

  11. Magnetism, Structure and their Interactions

    Zhang, WenxuTechnische Universität Dresden

    … compounds is investigated in four cubic Laves phase compounds (YFe2, ZrFe2, HfFe2, and LuFe2). The magnetic spin moment is decreased under pressure. A magnetic collapse where the spin moment vanishes is predicted under pressure around 20 GPa for Zr and Hf compounds, 40 GPa for Y and Lu …

    qucosa-diss

  12. Ferritic steel interconnectors and their interactions with Ni base anodes in solid oxide fuel cells (SOFC)

    Froitzheim, Jan HenrikPublikationsserver der RWTH Aachen University2008

    … shown that the Nb containing precipitates of the Laves phase type had a high affinity for Si which results in a reduced amount of Si in the alloy matrix. Thus, in Nb containing alloys Si impurities can be tolerated which causes lower alloy manufacturing costs. At the same time Si additions …

    aachen Repository record

  13. Upscaling effect in the preparation of metal hydride materials

    Martin Tayla ChirieUniversity of the Western Cape2024

    … alloy contained no impurities with a single C14 Laves phase and had a maximum storage capacity of 1.8 wt.% H2 at 20C . The base alloy additionally doped with Lanthanum (Ti0.85Zr0.15Cr0.2Mn1.22Ni0.22V0.3Fe0.06La0.02) was prepared by induction melting with an alumo-silica crucible and graphite …

    western-cape Repository record

  14. HYDROGEN STORAGE CHARACTERISTICS OF ZIRCONIUM((IRON-X)(CHROMIUM-1-X))(,2).

    IVEY, DOUGLAS G.University of Windsor1985

    … These intermetallics are predominantly single-phased, identified as the hexagonal, Laves phase. Hydrogen is absorbed quite readily, with no special activation treatment. Hydrogen absorption results in the formation of a distinct hydride phase, with the same crystal structure as the parent …

    windsor Repository record

  15. The effect of the build orientation and heat treatment on the fatigue and fracture properties of a directed energy deposited nickel-based superalloy (Inconel 718)

    Paul, MikyleDepartment of Mechanical Engineering2020

    … where a high concentration of niobium-rich Laves phase was almost completely eliminated by the heat treatment. The positive effects of the heat treatment on the material were noticed during the FCGR tests as the fatigue crack growth resistance and fatigue life of the material increased. The …

    cape-town Repository record

  16. Static and dynamic correlation in lattice gas systems : an application to the intermetallic hydride ZrV2Hx

    Bull, DJ2001

    … are calculated and compared with other AB2 CIS Laves phase hydrides.

    salford Repository record

  17. Laser surface treatment of materials with presence of carbides at the surface.

    Jabbar, Abdul Aleeem BDublin City University2012

    … The formation of carbnotride and nitride phases at the surface vicinity of laser treated layer contribute to increased hardness and dense layer formation at the surface. The residual stress formed at the surface of Hayness 188 alloy is on the order of 590 ± 15 MPa, 460± 15 MPa for high …

    dcu Repository record

  18. Untersuchungen zur Natur der Laves-Phasen in Systemen der Übergangsmetalle

    Grüner, DanielTechnische Universität Dresden

    Laves-Phasen sind intermetallische Verbindungen der Zusammensetzung AB2, die in den Strukturtypen C14 (MgZn2), C15 (MgCu2), C36 (MgNi2) oder deren Abkömmlingen kristallisieren. Diese sind Polytypen mit einem gemeinsamen grundlegenden Strukturmuster. Insgesamt sind über 1400 binäre und ternäre …

    qucosa-diss

  19. Compositional Exploration and Microstructural- Environmental Evaluation of Alloys for Glass Vitrification Applications

    Pek, Ming EnUniversity of Cambridge2025

    … of M12C over M23C6 carbides and introduced the χ phase in the low-C, high-Si variant. These changes enhanced oxidation resistance at 800°C and 1200°C through oxidation-induced Laves phase formation and the development of continuous silica scales, albeit at the expense of room-temperature …

    cambridge Repository record

  20. Monte-Carlo Simulation of Diffusion as an Aid to Interpreting Quasi-elastic Neutron Scattering from Lattice Gas Systems with Diffusion on Multiple Time-Scales

    Swales, J2022

    … in PdH, diffusion of hydrogen in the C15 Laves phase alloy ZrV2 was also examined in some detail. The rationale here is that this is a system where long-range translational diffusion and localised diffusion have been shown to coexist, and acts as a good test for the techniques developed …

    salford Repository record

Page 1 of 2