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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2020
Presentation Title Alloying for Precipitation Hardening in Chromium
Author(s) Mathias C. Galetz, Anke Silvia Ulrich, Petra Pfitzenmaier, Uwe Glatzel
On-Site Speaker (Planned) Mathias C. Galetz
Abstract Scope Refractory alloys based on chromium have been disregarded for a long time mainly due to its strong nitridation behavior above 1000C and its accompanying embrittlement, when it transforms into a ceramic. Another challenge of such alloy system are their ductile to brittle transition temperature (DBTT) above room temperature. On the other hand, chromium offers a lower density compared to Ni, a high oxidation resistance along with high availability and competitive pricing. Thus in this work a new class of heat treatable Cr-alloys is presented. Alloying with A15 forming elements (Ge, Si, Pt) or Mo that substitutes Cr in solid solution and A15 has a major impact on the microstructure, high temperature strength and oxidation resistance.
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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