Achieving thermally stable nanoparticles in chemically complex alloys via controllable sluggish lattice diffusion.

ABSTRACT: Nanoparticle strengthening provides a crucial basis for developing high-performance structural materials with potentially superb mechanical properties for structural applications. However, the general wisdom often fails to work well due to the poor thermal stability of nanoparticles, and the rapid coarsening of these particles will lead to the accelerated failures of these materials especially at elevated temperatures. Here, we demonstrate a strategy to achieve ultra-stable nanoparticles at 800~1000 °C in a Ni_59.9-xCo_xFe₁₃Cr₁₅Al₆Ti₆B_0.1 (at.%) chemically complex alloy, resulting from the controllable sluggish lattice diffusion (SLD) effect. Our diffusion kinetic simulations reveal that the Co element leads to a si

SUBMITTER: Xiao B 

PROVIDER: S-EPMC9388539 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature