About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-73: Mechanical, Electrical, and Structural Properties of Combinatorially Synthesized W-based Alloy Thin Films under Helium Irradiation |
Author(s) |
Haechan Jo, Injun Oh, Sanghun Park, Euimin Cheong, Daegun You, Dongwoo Lee |
On-Site Speaker (Planned) |
Haechan Jo |
Abstract Scope |
Tungsten is one of the promising candidates for the plasma facing material (PFM) in fusion reactors as the material has a high melting point, high thermal conductivity, and low sputtering rate. When tungsten is exposed to He-ion irradiation, however, the microstructure and physical properties degrade, limiting its practical application as a PFM. It has been suggested that the use of fine microstructures and alloying W with other additives make the material irradiation damage tolerant. In the present work, we synthesized combinatorial binary alloy thin films of W-Ta and W-Re systems and carried out X-ray diffraction, transmission electron microscopy, nanoindentation, and 4-point measurement measurements to reveal the microstructure and composition dependence on the irradiation damages on physical properties. Type of damages depending upon microstructures and compositions will be characterized, and their effects on the mechanical and electrical properties will be shown. |
Proceedings Inclusion? |
Undecided |