Isothermal annealing of thin rolled tungsten plates in the temperature range from 1300 °C to 1400 °C

Comparison of K-doped and pure cold-rolled tungsten sheets: As-rolled condition and recrystallization behaviour after isochronal annealing at different temperatures

“…This two-step-process indicates two different restoration mechanisms and has been reported in another study with isothermal annealing of cold-rolled W sheets as well [59]. ∆HVstep I could be interpreted as recovery phenomenon.…”

Microstructural evolution in single tungsten fiber-reinforced tungsten composites during annealing: recrystallization and abnormal grain growth

“…Several pure tungsten plates warm-or cold-rolled to different rolling reductions have been studied in terms of their thermal stability (see e.g. [15][16][17][18][19][20][21]). Moderately rolled tungsten plates (see [15][16][17][18][19]) are sufficiently thermally stable to withstand microstructural changes at the expected temperatures of 800 °C for the first wall, but will not be able to endure the higher expected divertor temperatures of 1100 °C and above for the required two years.…”

Thermal stability of the microstructure in rolled tungsten for fusion reactors

“…(1) comparably thick tungsten plates from AT&M, Beijing, after warm rolling to a thickness reduction of 67 % (W67) [13], 80 % (W80) [14], and 90 % (W90) [15] and (2) thin tungsten plates from Plansee SE, Reutte, with final thicknesses of 2 mm, 1 mm, 0.5 mm and 0.2 mm [17,18]. The two former (TP2 and TP1) are solely warm-rolled (at an elevated temperature below the nominal recrystallization temperature), whereas additional cold rolling is applied for the thinnest two (TP0.5 and TP0.2).…”