Present invention is about a transformation-induced plasticity high-entropy alloy which can provide improved mechanical properties compared to those obtained by conventional methods, due to the phase transformation occurring at the time of deformation at a cryogenic temperature.According to the present invention, the high-entropy alloy (HEA) includes 10-35 at% of Co, 3-15 at% of Cr, 3-15 at% of V, 35-48 at% of Fe, and 0-25 at% of Ni (exclusive of 25), and mainly consists of an FCC phase at room temperature, wherein transformation-induced plasticity, in which at least part of the FCC phase changes to a BCC phase, occurs at a cryogenic temperature (-196°C).
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