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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2020
Presentation Title Hot Isostatic Pressing of WC-3009 Niobium-Based Refractory Alloy
Author(s) Calvin V. Mikler, Benjamin Georgin, Brian Welk, Gopal Viswanathan, Kevin Chaput, Hamish Fraser
On-Site Speaker (Planned) Calvin V. Mikler
Abstract Scope Niobium-based WC-3009 (Nb-30Hf-9W wt%) is a single-phase bcc refractory alloy designed as a candidate replacement for the still commonly utilized C-103 (Nb-10Hf-1Ti wt%) alloy. While WC-3009 exhibits superior high-temperature mechanical properties compared with C-103, fabrication is economically prohibitive, and the alloy was not employed in any capacity. In this study, aliquots of pre-alloyed hydride-dehydride WC-3009 powder were canned and subsequently consolidated via hot isostatic pressing (HIP). This effort was performed to identify key alloy attributes that drive processability through HIP such that higher strength Nb-based refractory alloys can be utilized. Backscattered electron (BSE) imaging and electron backscattered diffraction (EBSD) analysis revealed the degree of recrystallization and recovery substructure formation. Transmission electron microscopy (TEM) coupled with x-ray energy dispersive spectroscopy (XEDS) were employed to analyze second phase precipitation behavior and dislocation substructures. The results indicated that hot isostatic pressing is a viable method of processing high performance Nb-based refractory alloys.
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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