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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2020
Presentation Title ZrC-W Composites Prepared by Reactive Melt Infiltration of Zr2Cu Alloy into Binder-jet Printed WC Preforms
Author(s) Rina Kiyangu Mudanyi, Corson Cramer, Amy Elliott, Dhananjay Kumar
On-Site Speaker (Planned) Rina Kiyangu Mudanyi
Abstract Scope Making stable materials for hypersonic and ultra-high temperature systems is challenging. High-temperature carbide/metal composites exhibit excellent properties such as desirable flexural strength at elevated temperatures, high hardness, resistance to wear, creep and corrosion, and low density. ZrC-W is studied for use in these environments because W and ZrC are mechanically, chemically, and thermally stable; i.e., they have similar thermal expansion coefficients, low solid solubility in each other at elevated temperatures, and high melting points, respectively. In this study, Zr2Cu was melt infiltrated into binder-jetted WC preforms to form ZrC-W. Zr2Cu was used for its low melting point; however, the copper precipitates out of the composite sample, leaving ZrC-W. The effects of preform sintering, amount of Zr2Cu added, and processing time on the cermet were studied. Microstructure, phase analysis, and mechanical properties of the cermets were analyzed. Applications for these materials include aerospace, automotive, energy, and defense.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


Alloying for Precipitation Hardening in Chromium
Development of Refractory Complex Concentrated Alloys RCCAs Using Diffusion Couple Approach
Dislocation Multiplication from a Frank-Read Source in Six Body-centered Cubic Refractory Metals
Dynamic Grain Growth in Refractory Metals
Effect of Dislocations and Grain Boundaries on Magnetic Flux Trapping in High-purity Niobium used for Superconducting Radio Frequency Cavities
Effect of Strain Rate on the Anisotropic Tensile Mechanical Properties of High Purity Niobium Single Crystals
Hot Isostatic Pressing of WC-3009 Niobium-Based Refractory Alloy
Intermetallic Precipitate Reinforced Refractory Metal Alloys toward ‘bcc-superalloys’
Mechanical Testing of Tungsten-Steel Laminate Composites for use in Fusion Applications
Microstructure, Microhardness and Oxidation Behavior of Mo-Si-B alloys in the Moss+Mo2B+Mo5SiB2 Three Phase Region
Modifying Grain Boundary Cohesion in Ultra-fine Grained Tungsten and Tungsten-based Nanocomposites through Systematic Doping
Molybdenum Foil Tensile Testing
Performance of Niobium and Molybdenum Alloys for High Temperature Sensing Applications
Pressureless Sintering and Microstructure Evolution of Ultrafine-grained Tungsten
Refractory Alloys 3D Printing for Missile and Space Applications
Seeking Toughness in Mo-Si-B: Composites of Stable Oxides
Static and Dynamic Grain Growth in Niobium at 1200 to 1500℃
The Influence of Dislocation Density on Thermal Conductivity in Pure Niobium from 2-9K
Thermally Activated Deformation Processes in W-Re Alloys
ZrC-W Composites Prepared by Reactive Melt Infiltration of Zr2Cu Alloy into Binder-jet Printed WC Preforms

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