The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy,Al_(0.5)CoCrCuFeNi,were analyzed for the nanoindentation performed at two temperatures.Critical behavior of serrations at room temperature and chaotic flows at 200°C were detected.These results are attributed to the interaction among a large number of slip bands.For the nanoindentation at room temperature,recurrent partial events between slip bands introduce a hierarchy of length scales,leading to a critical state.For the nanoindentation at 200°C,there is no spatial interference between two slip bands,which is corresponding to the evolution of separated trajectory of chaotic behavior. The statistical and dynamic behaviors of the displacement-load curves of a high-entropy alloy, Al 0.5 (0.5) CoCrCuFeNi, were analyzed for the nanoindentation performed at two temperatures. Critical behavior of serrations at room temperature and chaotic flows at 200 ° C were detected These results are attributed to the interaction among a large number of slip bands.For the nanoindentation at room temperature, recurrent partial events between slip bands introduce a hierarchy of length scales, leading to a critical state. For the nanoindentation at 200 ° C, there is no spatial interference between two slip bands, which is corresponding to the evolution of separated trajectory of chaotic behavior.