Microstructure and tensile properties of tungsten at elevated temperatures

Mechanical properties and thermal stability of rolled W-0.5wt% TiC alloys

“…The asrolled W-0.5 wt% TiC alloys show a typical brittle fracture at RT and turn into plasticity at 200°C with a high strength of 789 MPa and an elongation of $ 4.8%, indicating its DBTT is about 200°C. The UTS of the rolled W-0.5 wt% TiC is much higher than the reported value in bulk pure W [31] and W alloys [32,33] and the ductility at lower temperature is better than spark plasma sintered W alloys [32]. These enhanced mechanical property is due to the synergetic effects of nanosized dispersion strengthening, optimized rolling processes and appropriate annealing treatments.…”

Status of Materials Handbook for Target and Target-Interfacing Systems at European Spallation Source

“…For critical materials in target environment with scarce literature sources, dedicated research program has been set up and the obtained materials data are compiled in the Handbook. Extensive studies of project critical materials have been conducted in collaboration with other leading institutions, which include tungsten as spallation material [5][6][7][8][9][10][11], liquid hydrogen as moderator material [12], beryllium as reflector material, and greases as lubricating material [13,14]. This paper presents an overview of the ESS Materials Handbook and its development status as of May 2019.…”

Structural defect accumulation in tungsten and tungsten-5wt.% tantalum under incremental proton damage

“…During plasma disruptions and edge-localised mode events, heat loads can even reach up to the GW/m 2 range [10]. Unfortunately, the ductile-to-brittle transition temperature (DBTT) of tungsten is relatively high, namely 200-400°C depending on its processing route and resultant grain structure [11,12]. The DBTT is also reported to increase with neutron irradiation up to ∼800-1000°C [13,14].…”