About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials Systems for the Future of Fusion Energy
|
Presentation Title |
Development of Tungsten Heavy Alloy Composites for Fusion Applications |
Author(s) |
Wahyu Setyawan, Ba Nghiep Nguyen, Weilin Jiang, Md Ershadul Alam, James V Haag IV, Jing Wang, Laila El-Guebaly, Dalong Zhang, Ramprashad Prabhakaran, Charles H Henager Jr., G. Robert Odette, Mitsu Murayama |
On-Site Speaker (Planned) |
Wahyu Setyawan |
Abstract Scope |
W/NiFe tungsten heavy alloy (WHA) composites exhibit superior toughening than W, making them prospective structural materials for divertors. The composites consist of spheroidal W particles embedded in a Ni-based ductile phase. Tensile and bend specimens are tested as a function of temperature. General principles of ductile-phase-toughening are observed in the deformation of these composites. Finite-element models are developed to explore artificially designed lamellar brick-and-mortar microstructures. The strength and ductility of brick-and-mortar microstructures can be tailored by adjusting the brick aspect ratio. Ni+ and He+ ion irradiations are performed to investigate irradiation effects. Helium cavities are located preferentially at interphase boundaries. Atomistic simulations are performed to estimate the He effect on the cohesion of interphase boundaries. In addition, neutron activation calculations are performed to estimate the allowable limit of Ni for disposal and recycling options, He/H gas production, and damage level in the WHAs based on the ARIES-ACT2 power plant concept. |
Proceedings Inclusion? |
Planned: |
Keywords |
Composites, High-Temperature Materials, Other |