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![Investigation of Microstructure and Mechanical Properties by Direct Metal Deposition için kapak resmi Investigation of Microstructure and Mechanical Properties by Direct Metal Deposition için kapak resmi](/client/assets/d79c3e4af2b6d196/ctx/images/no_image.png)
Investigation of Microstructure and Mechanical Properties by Direct Metal Deposition
Başlık:
Investigation of Microstructure and Mechanical Properties by Direct Metal Deposition
Yazar:
Zhang, Jingwei, author.
ISBN:
9780438114623
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (94 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-11(E), Section: B.
Advisors: Frank Liou Committee members: K. Chandrashekhara; Kelly Homan; Joseph Newkirk; Heng Pan.
Özet:
Microstructure and properties of Direct Metal Deposition (DMD) parts are very crucial to meeting industrial requirements of parts quality. Prediction, and control of microstructure and mechanical properties have attracted much attention during conventional metal manufacturing process under different conditions. However, there is fewinvestigations focused on microstructure simulation and mechanical properties control under different process parameters during DMD process. This dissertation is intended to develop a multiscale model to investigate Ti6Al4V grain structure development and explore Ti6Al4V based functionally graded material (FGM) deposit properties during DMD process. The first research topic is to investigate and develop a cellular automaton-finite element (CA-FE) coupled model to combine with thermal history and simulate nucleation sites, grain growth orientation and rate, epitaxial growth of new grains, remelting of preexisting grains, metal addition, and grain competitive growth. The second research topic is to develop grain growth algorithm, which is appropriate for highly non-uniform temperature field and high cooling rate, to control grain structure under real-time changing process parameters. The third research topic is to investigate the influence of process parameters on microstructure and properties of Ti6Al4V-based FGMs, which are fabricated with different TiC volume fraction from 0 to 30vol%. The microstructure, Vickers hardness, phase identification, tensile properties of FGM are measured to investigate the fabricated FGM qualities. The Digital Image Correlation (DIC) is developed to analyze Young's modulus versus composition of FGM parts.
Notlar:
School code: 0587
Tüzel Kişi Ek Girişi:
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(688351.1) | 688351-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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