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] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

[3] Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2025年 / 245卷

基金：

中国国家自然科学基金;

关键词：

High entropy alloys; Precipitation; Corrosion; Passive film; Pitting; PASSIVE FILM BREAKDOWN; PIT GROWTH; SALT FILM; STABILITY; HETEROGENEITIES;

D O I：

10.1016/j.corsci.2025.112679

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页数：16

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