114 citations · 140 across the 4 of their papers we have counts for
4 papers · 1 filter
Deformation-induced homogenization of the multi-phase senary high-entropy alloy MoNbTaTiVZr processed by high-pressure torsion
Chuyi Duan, Aleksander Kostka, Xiaohu Li +4
Dendritic microstructures are frequently observed in as-solidified refractory high-entropy alloys (RHEAs), and their homogenization typically requires a long-term heat treatment at…
Modified Z-Phase Formation in a 12% Cr Tempered Martensite Ferritic Steel during Long-Term Creep
Johan Ewald Westraadt, William Edward Goosen, Aleksander Kostka +2
The formation of modified Z-phase in a 12Cr1MoV (German grade: X20) tempered martensite ferritic (TMF) steel subjected to interrupted long-term creep-testing at 550C and…
On the coarsening mechanism and deformation of borides under annealing and creep in a polycrystalline superalloy
Lola Lilensten, Aleksander Kostka, Sylvie Lartigue-Korinek +4
We have investigated the coarsening mechanism of intergranular Cr-rich M2B borides after creep and annealing at 850C for approximately 3000 hours in a polycrystalline nickel-based…
Influence of composition and precipitation evolution on damage at grain boundaries in a crept polycrystalline Ni-based superalloy
Paraskevas Kontis, Aleksander Kostka, Dierk Raabe +1
The microstructural and compositional evolution of intergranular carbides and borides prior to and after creep deformation at 850 C in a polycrystalline nickel-based supera…