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Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2016
Presentation Title Micromechanical Testing of Multi Compositional Tungsten Thin Film Alloys
Author(s) Vladica Nikolic, Stefan Wurster, Alan Savan, Alfred Ludwig, Reinhard Pippan
On-Site Speaker (Planned) Vladica Nikolic
Abstract Scope Magnetron sputter deposition was used to produce thin films of W – metal binary alloys with defined compositional gradients, on 200 μm thick cold – rolled tungsten substrate, yielding film thicknesses between 1-3 μm. Using this combinatorial materials library method, a wide range of alloys can be obtained on a single wafer and unique investigations of the exact influence of certain alloying elements on the mechanical properties can be performed. Micromechanical testing techniques, including nanoindentation and 3–point bending experiments, were performed in order to study the following alloys: W – Fe (0-6at %), W – Ti (0-12at %) and W – Ir (0-10at %). A SEM equipped with an EBSD detector was used to determine the microstructure, analyse the texture and to investigate the variation of the microstructure with respect to the alloying content and different heat treatments. The compositions of the regions of interest were determined using EDX spectroscopy.
Proceedings Inclusion? Planned: A print-only volume


Effect of Silicon on Texture of Niobium
Etched Surface of CVTD Single Crystal Tungsten Coating after Serving under High Temperature
Fracture of Severely Plastically Deformed Niobium and Tantalum
High Temperature Properties of Directionally Solidified Nb-rich Nb-Si-Cr Eutectics
Improving the Performance of Nb-Silicide Based Refractory Alloys through a Novel Cold Crucible Directional Solidification
Influences of Rare Earth on Microstructures and Mechanical Properties of Functionally Graded Cemented Carbides
Introduction of Precisely Controlled Microstructural Defects into SRF Cavity Nb Sheet and Their Impact on Local Superconducting Properties
Manufacturing of Bulk Ultrafine Grain Tungsten from Nanocrystalline Tungsten Powder and Its Potential Application for Nuclear and Fusion Reactors
Mechanical Properties of Cold-rolled Tungsten at Different Strain Rates
Micro-Mechanical Characterization of Micro-Architectured Refractory Metal Coatings
Micromechanical Testing of Multi Compositional Tungsten Thin Film Alloys
Microstructure and Properties of a Ternary Eutectic Mo-Si-B Alloy
On Plasticity of Polycrystalline Rhenium at Room Temperature
Reactive Spark Plasma Sintering of Tungsten Borides Using Elemental Tungsten and Boron Powders
Size Effect of Intermetallic Compounds on Fracture Toughness of Mo-Si-B Alloys
Stress Accommodation in Plastic Zone Ahead Crack Tip in Iridium
The Initiation and Propagation of Dynamic Abnormal Grain Growth in Refractory Metals
Thermally Activated Deformation Processes in Body-Centered Cubic Cr – How Microstructure Influences Strain-Rate Sensitivity

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