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Meeting MS&T21: Materials Science & Technology
Symposium 2021 Undergraduate Student Poster Contest
Presentation Title High Temperature Mechanical Properties of TiB2-WC-SiC Materials
Author(s) Elizabeth Sayre
On-Site Speaker (Planned) Elizabeth Sayre
Abstract Scope Ultra-high temperature materials are becoming increasingly important due to potential applications in the space and defense industries. Recent studies have shown diboride-based materials, specifically ZrB2, with core-shell microstructures are promising high strength UHTC materials given their high strength at higher temperatures. The current research extends the work on ZrB2 to TiB2 and is focused on a 92 TiB2 - 5 WC - 3 SiC (vol%) composition. The material was hot pressed and machined into bars for room and high temperature 4-point bend testing. Sample microstructures were characterized using SEM and EDS. Mechanical testing for the TiB2 composition showed an average flexure strength of 1.07 GPa at room temperature, with decreased strength values at 1200C, 1400C, and 1600C. Despite this, microstructural analysis showed grains with a core-shell structure similar to ZrB2 materials. This implies that high strength at elevated temperatures may not be wholly based on microstructure as previously thought.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Composition and Physicochemical Properties of Typical Waste Cooking Oil
Effect of Carbon Stoichiometry on the Heat of Formation of Hafnium Carbides
Effect of Modifier Cation Size on the Bulk Structure and Nickel Speciation in Alkali Borosilicate Glasses
Electron Cloud Migration Effect-induced Lithiophobicity/Lithiophilicity Transformation for Dendrite-free Lithium Metal Anodes
Enhanced Mechanical Properties in a 4140 Steel by "In-House" Intensive Quench
Experiential Study on Critical Stress Intensity Factor of Carbon Nanotube Filled Epoxy
Exploring the Liquid Phase Exfoliation of Two-Dimensional Bilayered Vanadium Oxide in Aqueous Media for Li ion Batteries
High Temperature Mechanical Properties of TiB2-WC-SiC Materials
Highly Crystallized Prussian Blue with Enhanced Kinetics for Highly Efficient Sodium Storage
Investigation of Embedded Metallic Components on 3D Printed Ceramic Structures
Machine Learning Approaches to Predict Properties from Microstructure Images in Ceramic-Metal Composites
Mechanical Behavior of Automotive Structural Steels in the Vicinity of the Ductile-brittle Transition
Mechanical Property Assessment of Silicon Carbide Fiber-reinforced Epoxy-matrix Composites
Optimal Integration of TiO2-Coated Gold Nanostars for Enhancement of Photocatalytic Water Reduction
Perovskite Film Formation for Solar Cell Absorbers: Effects of Substrate Modification
Pressure Optimization of Fast-Moving Silicon MEMS Micromirrors
Processing and Properties of (Ta, Nb, Hf, Ti)C
Rheological Characterization of Highly Loaded Alumina-Polymer Suspension for Thermal Paste 3D Printing
The Dynamic Performance of Wearable Sensors with Flexible Silver Ink
The Mechanisms of Micro-fine Titanaugite Enter to Ilmenite in the Flotation and Depression Behavior of Sodium Silicate
Thermal Analysis of Sodalite-immobilized Iodine-129 Caustic Scrubber Slurry
ZrB2 Aqueous Slurry Development for DIW Additive Manufacturing

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