| dc.identifier.uri | http://hdl.handle.net/11401/78379 | |
| dc.description.sponsorship | This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree. | en_US |
| dc.format | Monograph | |
| dc.format.medium | Electronic Resource | en_US |
| dc.format.mimetype | Application/PDF | en_US |
| dc.language.iso | en_US | |
| dc.type | Thesis | |
| dcterms.abstract | 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. | |
| dcterms.available | 2018-07-09T16:30:20Z | |
| dcterms.contributor | Trelewicz, Jason | en_US |
| dcterms.contributor | Chen-Wiegart, Karen | en_US |
| dcterms.contributor | Halada, Gary | en_US |
| dcterms.creator | Dong, Jian | |
| dcterms.dateAccepted | 2018-07-09T16:30:20Z | |
| dcterms.dateSubmitted | 2018-07-09T16:30:20Z | |
| dcterms.extent | 63 pg. | en_US |
| dcterms.format | Monograph | |
| dcterms.identifier | http://hdl.handle.net/11401/78379 | |
| dcterms.issued | 2017-01-01 | |
| dcterms.language | en_US | |
| dcterms.provenance | Submitted 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.provenance | Made 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: 2017-01-01 | en |
| dcterms.subject | Materials Science | |
| dcterms.title | Synthesis of Binary and Ternary Nanocrystalline Tungsten Alloys through High Energy Ball Milling | |
| dcterms.type | Thesis | |
