TY - JOUR
TI - Structure and toughening mechanical properties of multi principal component high entropy alloy
AU - Dai Junhao
JN - Thermal Science
PY - 2021
VL - 25
IS - 6
SP - 4019
EP - 4025
PT - Article
AB - 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.