Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"arc melting"”.
-
Commissioning Of An Arc-melting/vacuum Quench Furnace Facility For Fabrication Of Ni-ti-fe Shape Memory Alloys, And The Characterization
… activated at 120 K, is further developed through arc-melting a range of compositions and subsequent thermo-mechanical processing. A controlled atmosphere arc-melting facility and vertical vacuum quench furnace facility was commissioned to fabricate these alloys. The facility can create a vacuum of …
-
Síntese e caracterização de ligas nanocristalinas à base de cobre e zircônio com elevada capacidade de formação de estado vítreo
… and computational thermodynamics simulations. Arc melting and suction casting (solidification out of equilibrium) processes were performed in order to produce nanocrystalline materials. X-ray and scanning electron microscopy results showed that samples produced with arc melting followed by …
-
The Cr₃O-type compound in the niobium-rhodium-silicon ternary system
… niobium-25 percent silicon, were prepared by arc-melting compacts of high-purity powders. Both x-ray diffractometer and camera techniques were used to analyze the resulting structures. No measurable amount of silicon was found to substitute for rhodium in the Nb₃Rh structure. The 75 percent …
-
Novel Synthesis and Characterization of Uranium-Zirconium Carbonitride by Direct Casting
… involving the admission of nitrogen gas during arc melting of uranium, zirconium, and carbon. Initial microstructural examinations using scanning electron microscopy indicated that the samples remain heterogenous with zirconium-rich cores in a uranium-rich matrix. Heterogeneity resulted from …
-
A Microstructural Characterization of as-Cast and Rapidly Solidified Titanium-Silicon Alloys (Silicide, Melt-Spinning, Precipitation, Metastable, Oxygen)
… solidified material, namely laser surface melting and melt-spinning. Prior to RS, a careful microstructural characterization of the as-cast material was undertaken. This also involved a study of an homogenized and heat treated base alloy (Ti-2 wt%Si) to determine the types of precipitation …
-
Microstructural formations and phase transformation pathways in tantalum carbides
… high hardness, chemical resistance, and high melting temperatures. Tantalum carbide (TaC) and its sub-stoichiometric Ta2C and Ta4C3 phases have emerged as candidate materials for ultra-high temperature structural applications. A consequence of the high melting temperature is the limiting …
-
Upscaling effect in the preparation of metal hydride materials
… (PCT) measurements. Alloys were prepared by arc melting and induction melting. Ti0.85Zr0.15Cr0.2Mn1.22Ni0.22V0.3Fe0.06 alloy prepared by arc melting served as the base alloy. The EDS and XRD revealed that the alloy contained no impurities with a single C14 Laves phase and had a maximum …
-
Design Strategies for Improving the Oxidation Resistance of Multi-Principal Element Alloys
… relationships of non-dilute alloys. This research has shown that new ageMPEAs are able to compete with traditional SAs in terms of oxidation resistance as well ascompressive strength. Several new High Entropy Superalloy (HESAs) were developed usingthe CALPHAD approach, particularly to study …
-
Properties and applications of metastable precious metal intermetallic compounds
… are also fascinating topics for scientific research. These materials have a long history, with gold and silver amongst the very earliest metals used by humans. Over the past millennia, the primary applications of the precious metals and their alloys have been in the ever-lucrative jewellery …