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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2020
Presentation Title Thermally Activated Deformation Processes in W-Re Alloys
Author(s) Verena Maier-Kiener, Johann Kappacher, Daniel Kiener, Helmut Clemens
On-Site Speaker (Planned) Verena Maier-Kiener
Abstract Scope In this study, we investigate the influence of Re on mechanical properties in W-alloys by combining static heat treatments and high resolution imaging and in-situ high temperature nanoindentation experiments.to Three different alloy compositions were tested, commercially pure W as well as W5Re and W10Re. The alloys were examined in two different microstructural conditions, recrystallized coarse grained as well as ultra-fine grained. The latter one was achieved through high pressure torsion. Nanoindentation experiments were conducted from ambient temperatures up to 800C in situ in a scannine electron microscope, with temperature increments of 100C. In the coarse grained condition alloy softening was experimentally confirmed for the Re containing alloys, stemming from a reduced Peierl’s potential that was experimentally confirmed . The thermal stability of the ultra-fine grained microstructure could be increased through Re-alloying, which was evidenced from the nanoindentation experiments as well as additional static heat treatment experiments paired with EBSD measurements.
Proceedings Inclusion? Planned: Supplemental Proceedings volume
Keywords Biomaterials,

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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