{"@context":"http://iiif.io/api/presentation/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/manifest.json","@type":"sc:Manifest","label":"Synthesis of Binary and Ternary Nanocrystalline Tungsten  Alloys through High Energy Ball Milling","metadata":[{"label":"dc.description.sponsorship","value":"This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree."},{"label":"dc.format","value":"Monograph"},{"label":"dc.format.medium","value":"Electronic Resource"},{"label":"dc.format.mimetype","value":"Application/PDF"},{"label":"dc.identifier.uri","value":"http://hdl.handle.net/11401/78379"},{"label":"dc.language.iso","value":"en_US"},{"label":"dcterms.abstract","value":"Due 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."},{"label":"dcterms.available","value":"2018-07-09T16:30:20Z"},{"label":"dcterms.contributor","value":"Chen-Wiegart, Karen"},{"label":"dcterms.creator","value":"Dong, Jian"},{"label":"dcterms.dateAccepted","value":"2018-07-09T16:30:20Z"},{"label":"dcterms.dateSubmitted","value":"2018-07-09T16:30:20Z"},{"label":"dcterms.extent","value":"63 pg."},{"label":"dcterms.format","value":"Monograph"},{"label":"dcterms.identifier","value":"http://hdl.handle.net/11401/78379"},{"label":"dcterms.issued","value":"2017-01-01"},{"label":"dcterms.language","value":"en_US"},{"label":"dcterms.provenance","value":"Made available in DSpace on 2018-07-09T16:30:20Z (GMT). No. of bitstreams: 1\nDong_grad.sunysb_0771M_13400.pdf: 2158046 bytes, checksum: b1ff3cd5a8452654d40cece10e286284 (MD5)\n  Previous issue date: 2017-01-01"},{"label":"dcterms.subject","value":"Materials Science"},{"label":"dcterms.title","value":"Synthesis of Binary and Ternary Nanocrystalline Tungsten  Alloys through High Energy Ball Milling"},{"label":"dcterms.type","value":"Thesis"},{"label":"dc.type","value":"Thesis"}],"description":"This manifest was generated dynamically","viewingDirection":"left-to-right","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json","@type":"sc:Canvas","label":"Page 1","height":1650,"width":1275,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/11%2F66%2F34%2F116634008380184354894141075704059568313/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","height":1650,"width":1275,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/11%2F66%2F34%2F116634008380184354894141075704059568313","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json"}]}]}]}