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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2020
Presentation Title Refractory Alloys 3D Printing for Missile and Space Applications
Author(s) Youping Gao, John R Porter, Noah Philips, Omar Mireles
On-Site Speaker (Planned) Youping Gao
Abstract Scope Refractory alloys have extraordinary resistance to heat, wear, and, with superior durability, are often the desired material for extreme environment applications on space craft, missiles, and hypersonic vehicles. Due to the difficulty and high cost of manufacturing complex shapes using refractory metals, utilization has been hampered in the most demanding applications. 3D printing has exhibited a superior shape producing capability. In this presentation, successful 3D printing of high quality Niobium C103 alloy components has been demonstrated. The properties of 3D printed Nb C103 were compared to equivalent wrought parts, including the effect of heat treatments. 3D “as-printed” microstructures were extremely stable and largely intact even after 2-hrs at 2900F. Superior properties of 3D printed Nb C103 were observed from room temperature to elevated temperature. A hypothesis for such stable microstructures is proposed. A case study of performance gain in sophisticated Nb C103 engineered hardware will also be presented.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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