Size-dependent pitting corrosion behavior for L12-strengthened high-entropy alloys

被引：0
|
作者：
Li, Tianrun [1 ,2 ]
Wang, Debin [1 ]
Cui, Jingping [1 ]
Li, Ning [3 ]
Zhang, Suode [1 ]
Wang, Jianqiang [1 ]
机构：
[1] Shenyang National Laboratory for Materials Science, Institute of Metal Research, CAS, Shenyang,110016, China
[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang,110016, China
[3] Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, CAS, Shenyang,110016, China
来源：
Corrosion Science | 2025年 / 245卷
关键词：
Corrosion resistant alloys;
D O I：
10.1016/j.corsci.2025.112679
中图分类号：
学科分类号：
摘要：
This work thoroughly investigated the effects of the L12 size upon the corrosion behavior for L12-strengthened HEAs. Compared with the single-phase homogenized HEA, HEAs strengthened by small-sized L12 exhibited higher pitting potential (Epit). Nevertheless, with the L12 coarsening, Epit decreases markedly. The exceptional corrosion behavior for small-sized L12-strengthened HEAs was attributed to the rapid repassivation of the remaining FCC matrix after the complete dissolution of L12, forming the uniform and Cr-enriched films. The deteriorated corrosion resistance induced by the larger L12 was ascribed to heterogeneous films due to the incomplete dissolution of L12 and the reduced pitting growth resistance. © 2025 Elsevier Ltd
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