Index Catalog // ScholarsArchive@OSU

Designed heterogeneities improve the fracture reliability of a Zr-based bulk metallic glass

Creator:: Li, B. S., Shakur Shahabi, H., Scudino, S., Eckert, J., and Kruzic, J. J.
Abstract:: Bulk metallic glasses (BMGs) have been reported to have large variability in mode I fracture toughness. In this study, alternating soft and hard regions were created in a Zr₅₂.₅Ti₅Cu₁₈Ni₁₄.₅Al₁₀ (at%) BMG via mechanical imprinting at room temperature. While only 50% of as-cast samples demonstrated plastic deformation during mode I fracture...
Resource Type:: Article
Full Text:: . Zhang, Scr. Mater., 68 (2013) 845-848. [12] S. Scudino, B. Jerliu, S. Pauly, K.B. Surreddi, U. Kühn, J

Effect of Imprinting Process on Fracture Behavior of a Zr-based Bulk Metallic Glass

Creator:: Li, Bosong
Abstract:: Bulk metallic glasses (BMGs) are relatively new amorphous materials that have received much attention in recent years. Rapid cooling methods from the liquid state provides the possibility to bypass crystallization during solidification. Due to the lack of crystal defects such as grain boundaries and dislocations, BMGs can have some special...
Resource Type:: Masters Thesis
Full Text:: <103 K/s, than for ribbons and wires; • They exhibit a large undercooled region which keeps BMGs

Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

Creator:: Doyle, Ryan P.
Abstract:: High Entropy Alloys (HEA) exhibit unusual properties and are gaining interest as new materials for challenging applications in the aerospace, hypersonic and medical fields. The application of HEAs have been limited by the development of powder production at scale. A recently developed process of plasma spheroidization by 6K, inc. has...
Resource Type:: Masters Thesis
Full Text:: 110-200 W and scanning speeds of 200- 1000 mm/s were varied in nitrogen atmosphere to determine

Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

Creator:: Teng, Fei
Abstract:: The thermal degradation of structural materials is considered to be a key factor for evaluating the lifetime of current nuclear power plants. Ni-based and Fe-based alloys, such as 690, 625, 304, and 316, are widely used in nuclear industry as structural components due to the extraordinary corrosion resistance and mechanical...
Resource Type:: Dissertation
Full Text:: and substructure boundary were labeled. Si, Mo, S, Cr and Ni are enriched, while Fe is depleted

Rework Practices in the Dairy Industry and Their Potential Contribution to Microbial Spoilage

Creator:: Rush, Casey E.
Abstract:: Rework is a common practice in the dairy industry as a way for processors to minimize waste while recovering costs for dairy products that are unsaleable. The regulations available for reworking fluid dairy products only outline product eligibility requirements with a focus on repasteurization of the products containing rework as...
Resource Type:: Masters Thesis
Full Text:: processor s as e s ream is especiall cri ical from an en ironmen al aspect. Dairy processing is one of

The chemistry and device applications of amorphous thin-film interfaces

Creator:: Knutson, Christopher C.
Abstract:: Solid-state amorphous materials show amazing promise in thin-film electronics. The interface-to-bulk ratio of thin films makes interfacial chemistries of these systems of utmost importance. Thin films of amorphous metals, dielectrics and semiconductors have novel chemistries that are not only based upon their elemental constituent makeup, but also based upon the...
Resource Type:: Dissertation
Full Text:: (ε∞R), interface parameter for a surface (S), and surface state density (DSS) for selected

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Creator:: Cox, Bryce
Abstract:: Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
Resource Type:: Dissertation
Full Text:: mm/s on a build plate……………………………………………………………..…… 34 7. Side by side comparison of the melt pool

Selective Laser Melting of Duplex Stainless Steel 2205: Microstructure, Mechanical Properties, and Corrosion Performance

Creator:: Nigon, Gregory N.
Abstract:: The aim of this work was to assess the viability of duplex stainless steel 2205 components built via selective laser melting for seawater applications. First, a comprehensive additive manufacturing assessment was done. The duplex stainless steel 2205 components were selectively laser melted from gas atomized powder (D90 <45m) using a...
Resource Type:: Masters Thesis
Full Text:: from 200-1000 mm/s (layer thickness was 0.03 μm and hatch spacing was 0.05 μm

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

Creator:: Han, Jae-Kyung
Abstract:: High-pressure torsion (HPT) is an effective severe plastic deformation (SPD) technique to produce bulk nanostructured materials (BNMs). These BNMs often show a combination of exceptional mechanical and physical properties. Processing of single metals and alloys by HPT has been understood that the homogenous microstructures can be achieved throughout the disk...
Resource Type:: Dissertation
Full Text:: (number of photons/s/mm2/mrad2/0.1%BW), tunable wavelength by changing the energy of X-ray

ScholarsArchive@OSU

Designed heterogeneities improve the fracture reliability of a Zr-based bulk metallic glass

Effect of Imprinting Process on Fracture Behavior of a Zr-based Bulk Metallic Glass

Additive Manufacturing of FeCrCoCuNi High Entropy Alloy via Laser Powder Bed Fusion and Nickel Aluminum Bronze via Laser Directed Energy Deposition

Investigation of Thermal Degradation in Structural Alloys for Nuclear Power Systems

Rework Practices in the Dairy Industry and Their Potential Contribution to Microbial Spoilage

The chemistry and device applications of amorphous thin-film interfaces

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Selective Laser Melting of Duplex Stainless Steel 2205: Microstructure, Mechanical Properties, and Corrosion Performance

Characterization of Heterostructured Nanocrystalline Metals Processed by High-Pressure Torsion

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