As steel forming processes transfer towards high-speed, high-throughput, high-precision and small-scale with temperature dependence, clarifying the elemental nano-deformation habits of metals is vital for manufacturing course of optimization, nano-optical, electrical, mechanical or floor properties management. Sadly, restricted by the point scale and pattern measurement, the impact of temperature on the deformation habits of nano-metals through the ultrahigh-strain-rate forming course of stays largely unexplored. This research demonstrated the nonlinear impact of temperature on the formability of nano-metals for the primary time. Under 673 Okay, temperature facilitated the formability of nano-metals benefiting from the temperature-promoted dislocation proliferation course of, whereas temperatures above 673 Okay weakened the plasticity of the nano-metal as a result of activation of the part transformation. Frequent part transition activation and accelerated dislocation annihilation at excessive temperatures diminished the interstitial transport channel and delayed the atomic switch course of. Based mostly on the temperature response of nano-metals in deformation mechanisms, defect evolution habits and formability, the constitutive mannequin and nano-deformation mechanism map of nano-metals in ultrahigh-strain-rate forming processes had been proposed. The target of this work was to supply fundamental help for the cheap matching of nano-forming know-how and processing temperature, and the dedication of the optimum course of window via basic nano-deformation habits exploration.
