Index Catalog // ScholarsArchive@OSU

Significance of High-Pressure-Torsion Processing on an Aluminum-Lithium Aerospace Alloy

Creator:: Keller, Marina
Abstract:: Aluminum alloys are popular in aerospace and automotive industries because of their relatively high strength-to-weight ratio. The study of enhancing aluminum’s mechanical properties through grain refinement is especially important. One such technique is High-Pressure Torsion processing (HPT), which leads to significant grain size refinement and enhances mechanical properties like ductility...
Resource Type:: Honors College Thesis
Full Text:: -189. [5] R. Z. Valiev, Y. Estrin, Z. Horita, T. G. Langdon, M. J. Zehetbauer, Y. T. Zhu, JOM 58 (4

In-Situ Stereo Vision Metrology for Metal Powder Bed Fusion Additive Manufacturing

Creator:: Mosher, Daniel P.
Abstract:: Powder Bed Fusion (PBF) techniques are additive manufacturing (AM) technologies with paradigm-shifting potential for the production industry. However, before they can become viable production solutions for quality critical industries, issues with process consistency and repeatability need to be addressed. There is a need for in-situ sensing systems that characterize process...
Resource Type:: Dissertation
Full Text:: of Materials Qualification Needs for Metal Additive Manufacturing. JOM 68(3):747:764 9

Continuous cooling transformation diagram from modified end-quench method

Creator:: Anderson, Donald Evans
Resource Type:: Masters Thesis
Full Text:: ! _ _ 'p _ Interval Coo/ed in Jom/ny End-Quench Mac/i/ne, Seconds 2-1/2 /2 ¿l-1/2 7/8 f -3/4

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

Creator:: Soler, Miguel
Abstract:: Vacuum arc remelting (VAR) is a secondary melting process for exotic alloys. The main purpose of this process is to increase the input ingot’s physical and chemical homogeneity. This is accomplished through the application of a high current that melts the material through the emergence of electrical arcs that induce...
Resource Type:: Masters Thesis

Investigating arc behavior in a DC vacuum arc remelting furnace using magnetic flux density measurements

Creator:: Woodside, Rigel
Abstract:: The behavior of a metal vapor plasma arc in a vacuum arc remelting (VAR) furnace is believed to contribute to the formation of defects in reactive metal and super-alloy ingots. Industry standard instrumentation, which includes electric current and voltage measurements, can asses the stability of an arc but cannot predict...
Resource Type:: Masters Thesis

On the Role of Particle Size Distribution in Selective Laser Melting of 316L Stainless Steel

Creator:: Coe, Hannah G.
Abstract:: Selective laser melting (SLM) is an additive manufacturing (AM) process that uses a laser beam to melt metal powder as it is spread onto the build surface using a roller or scraper, followed by rapid solidification to manufacture a 3D component, one layer at a time. In SLM process, density...
Resource Type:: Masters Thesis

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

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Creator:: Bowen, Michael S.
Abstract:: Recent interest in oxy-fuel combustion for carbon capture, as well as advancements in technologies such as magnetics, materials, and computational modeling has sparked renewed interest in magnetohydrodynamic (MHD) power generation. The increased temperatures of oxy-fuel combustion versus air-fuel combustion poses a challenge in the selection of materials for plasma exposed...
Resource Type:: Masters Thesis

Arc distribution and motion during the vacuum arc remelting process as detected with a magnetostatic approach

Creator:: Woodside, Rigel
Abstract:: Currently, the temporal arc distribution across the ingot during the vacuum arc remelting (VAR) process is not a known or monitored parameter. It is has previously been shown that arcs can spatially constrict during VAR, and this constriction can lead to undesired defects in the material. Additionally, correct accounting for...
Resource Type:: Dissertation

Numerical Modeling of Powder Metallurgy Hot Isostatic Pressing

Creator:: Sobhani, Samaneh
Abstract:: Powder Metallurgy Hot Isostatic Pressing (PM-HIP) is a widely recognized powder metallurgy manufacturing process to produce near-net-shape and net-shape components. During general PM-HIP processes the metal powders are filled within a capsule (die), heated and loaded with high pressure simultaneously, and solidified to form the final product. Due to the...
Resource Type:: Dissertation

ScholarsArchive@OSU

Significance of High-Pressure-Torsion Processing on an Aluminum-Lithium Aerospace Alloy

In-Situ Stereo Vision Metrology for Metal Powder Bed Fusion Additive Manufacturing

Continuous cooling transformation diagram from modified end-quench method

Computational Investigation on the Effects of Arc Location in Vacuum Arc Remelting

Investigating arc behavior in a DC vacuum arc remelting furnace using magnetic flux density measurements

On the Role of Particle Size Distribution in Selective Laser Melting of 316L Stainless Steel

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

Evaluation of Materials for Use in Open-Cycle Magnetohydrodynamic Power Generation

Arc distribution and motion during the vacuum arc remelting process as detected with a magnetostatic approach

Numerical Modeling of Powder Metallurgy Hot Isostatic Pressing

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