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dc.identifier.urihttp://hdl.handle.net/11401/78379
dc.description.sponsorshipThis work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.en_US
dc.formatMonograph
dc.format.mediumElectronic Resourceen_US
dc.format.mimetypeApplication/PDFen_US
dc.language.isoen_US
dc.typeThesis
dcterms.abstractDue to excellent physical and mechanical properties, such as high strength, high wear resistance and longer fatigue life, nanocrystalline alloys have attracted a good deal of attention in the field of material science. Based on this background, the thesis focuses on tungsten-copper binary alloy system, tungsten-zirconium binary alloy system, and tungsten-copper-zirconium ternary alloy system produced by high energy ball milling and analyzed by X-ray diffraction. Even though nanocrystalline metals are relatively unstable, doping solute into grain boundaries is a useful method to achieve stabilization. At low concentration, the doping solute can chemically mix with the base metal. As long as the concentration of doping solute increases to a limit value, the chemical mixed (segregate doped ions to grain boundaries) alloys will not be produced. In this work, it was found that, in W-Cu and W-Zr binary system, all samples were chemical mixing at low concentration (less than 10 at.% copper or zirconium), but the limit value is lower in W-Cu-Zr ternary system. Many mechanical properties of alloys are effected by the grain size and lattice parameter. Therefore, the grain sizes and lattice parameters are organized in this thesis work.
dcterms.available2018-07-09T16:30:20Z
dcterms.contributorTrelewicz, Jasonen_US
dcterms.contributorChen-Wiegart, Karenen_US
dcterms.contributorHalada, Garyen_US
dcterms.creatorDong, Jian
dcterms.dateAccepted2018-07-09T16:30:20Z
dcterms.dateSubmitted2018-07-09T16:30:20Z
dcterms.extent63 pg.en_US
dcterms.formatMonograph
dcterms.identifierhttp://hdl.handle.net/11401/78379
dcterms.issued2017-01-01
dcterms.languageen_US
dcterms.provenanceSubmitted by Jason Torre (fjason.torre@stonybrook.edu) on 2018-07-09T16:30:20Z No. of bitstreams: 1 Dong_grad.sunysb_0771M_13400.pdf: 2158046 bytes, checksum: b1ff3cd5a8452654d40cece10e286284 (MD5)en
dcterms.provenanceMade available in DSpace on 2018-07-09T16:30:20Z (GMT). No. of bitstreams: 1 Dong_grad.sunysb_0771M_13400.pdf: 2158046 bytes, checksum: b1ff3cd5a8452654d40cece10e286284 (MD5) Previous issue date: 2017-01-01en
dcterms.subjectMaterials Science
dcterms.titleSynthesis of Binary and Ternary Nanocrystalline Tungsten Alloys through High Energy Ball Milling
dcterms.typeThesis


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