In this research, the influence of plastic deformation on the corrosion behaviors of CrCoFeMnNi high entropy alloy were comprehensively investigated. As the degree of plastic deformation increases, both the acceptor density of the passive film and the thickness of the space charge layer increase, while the resistance of the passive film gradually weakens. The Fe and Cr oxides on the passive films decrease with the increasing plastic deformation degree, resulting in the weaker resistance of the passive film. Numerous dislocations formed after plastic deformation promote the increase of electrochemical dynamics and galvanic corrosion rate. Therefore, severe plastic deformation lowers the corrosion resistance of the alloy.

本研究综合研究了塑性变形对CrCoFeMnNi高熵合金腐蚀行为的影响。随着塑性变形程度的增加，钝化膜的受主密度和空间电荷层的厚度都增加，而钝化膜的电阻逐渐减弱。钝化膜上的Fe和Cr氧化物随着塑性变形程度的增加而减少，导致钝化膜的电阻变弱。塑性变形后形成的大量位错促进了电化学动力学和电偶腐蚀速率的增加。因此，剧烈的塑性变形会降低合金的耐腐蚀性。