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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Solid State Diffusion Bonding of Metals and Alloys
Presentation Title O-49: Joining of 14YWT Ferritic ODS Alloys by Spark Plasma Technique
Author(s) Madhavan Radhakrishnan, Elisa Torresani, Eugene Olevsky, Stuart Maloy, Osman Anderoglu
On-Site Speaker (Planned) Madhavan Radhakrishnan
Abstract Scope Nanostructured ferritic ODS alloys are promising candidates for fuel cladding applications due to their stable microstructure, strength and radiation tolerance at high temperatures. Here, spark plasma joining of as-rolled nanostructured 14YWT ferritic ODS alloys have been carried out at 800C, 1020C and 1030C under a uniaxial pressure of 40 MPa. Samples bonded at 1030C showed better chemical bonding with homogeneous microstructure across the interface, without any reduction in the hardness values compared to the base alloys. Density measurements indicate that samples joined at 1030C are 98.6% dense, with some micro-voids trapped at the interface. The samples joined at 800C yielded an incomplete bond with micro-cracks that runs along the entire sample. The presence of columnar grains continuously near the interface suggests the possibility of localized melting and subsequent solidification of the alloy as a result of local temperature rise that could be attributed to high contact resistance at the interface.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

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Interfacial Recrystallization and Element Diffusion during the Hot Compression-bonding of Ti-6321 to TC4
Mechanical Characterization of Diffusion Bonded Alloy 800H
Mechanical Performance of Diffusion Bonded 316 Stainless Steel for use in a Hybrid Compact Heat Exchanger
Microstructural Characterizations and Mechanical Properties of Diffusion Bonded Stainless Steel 316H and Inconel 800H
Microstructural Evolution and Mechanical Properties of Lap-jointed Ti-6Al-4V Plates by Pin-less Friction Stir Spot Welding
Microstructure Evolution and Mechanical Properties of Diffusion Bonded Ti6Al4V Alloy Joints for Aerospace Applications
Modeling Strength of Diffusion Bonded Interface Using Phase-Field Recrystallization and Creep-Damage Models.
MTI Low Force Friction Welding
Multi-Scale Study Of Bonding Mechanism Between Immiscible Mg/Steel Alloys
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Solid-state Diffusion Bonding of Glass-metal for the International Thermonuclear Experimental Reactor (ITER) Diagnostic Windows
Solid State Joining of Dissimilar Ni-based Superalloys Using Field Assisted Sintering Technology
Tensile Performance of Diffusion Bonded Haynes 230 Alloy for use in a Compact Heat Exchanger
The Role of Interface Microstructure and Chemistry on the Bond Strength of Aluminum 6061 HIP-bonded Samples

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