At present, the strength and toughening degree of the multi-principal element
high entropy alloy are not high, and the plastic deformation capacity is
poor. In order to solve this problem, the structure and mechanical
properties of the multi-element high entropy alloy were studied. The
micro-structure and strengthening mechanism of the alloy were studied. By
establishing a reliable random solid solution model and using the first
principle to calculate the phase structure, thermodynamics, and elastic
properties of the alloy, theoretical guidance is provided for the design and
development of new high entropy alloy. The high entropy alloy system with
high specific strength and high tensile plasticity was prepared, and its
strengthening and toughening mechanism was studied. The experimental
results show that with the increase of Zr content, the fracture strength of
multi-component high entropy alloy first increases and then decreases. When
it reaches a fixed value, the comprehensive mechanical properties of the
alloy are the best. Compared with the two literature methods, the tensile
strength of this method is 250 MPa, and the work hardening after yielding
makes the alloy have higher strength and better plastic deformation ability.