Corrosion resistance improvement of multi-principal element alloy by tailored structure with heterogeneous grains

被引：2
作者：
Liu, Xinyi [1 ,2 ]
Li, Wanpeng [3 ]
Chen, Wenyu [3 ]
Chou, Tzu-Hsiu [3 ]
Wang, Chenchong [4 ]
Ren, Jianmin [1 ]
Wang, Xu [1 ]
Huang, Jacob C. [3 ]
Wu, Ming [1 ]
机构：
[1] Liaoning Petrochem Univ, Sch Mech Engn, Fushun 113001, Liaoning, Peoples R China
[2] China Univ Petr, Coll Pipeline & Civil Engn, Qingdao 266555, Shandong, Peoples R China
[3] City Univ Hong Kong, Hong Kong Inst Adv Study, Dept Mat Sci & Engn, Kowloon, Hong Kong, Peoples R China
[4] Northeastern Univ, Sch Mat Sci & Engn, State Key Lab Rolling & Automat, Shenyang 110819, Liaoning, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 23卷
基金：
中国国家自然科学基金;
关键词：
Multi-principal element alloy; Heterogeneous grain structure; Corrosion; Grain boundary; HIGH-ENTROPY ALLOYS; PRECIPITATION BEHAVIOR; STAINLESS-STEEL; HIGH-STRENGTH; DEFORMATION; 316L;
D O I：
10.1016/j.jmrt.2023.02.129
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Co40Cr20Ni30Al5Ti5 multi-principal element alloy (MPEA) with heterogeneous grain structure (HGS) and nano L12 precipitates is successfully designed by cold rolling and proper heat treatment. The HGS alloy exhibits excellent corrosion resistance and passiv-ation performance, originated from high-density grain boundaries in fine grains and abundant defects in deformed grains, which encourages surface to form a thicker and more efficient passive layer to inhibit the initial pitting corrosion. This finding indicates that the developed MPEA with HGS can possess an excellent combination of corrosion resistance and mechanical properties, providing highly positive factors for future applications.(c) 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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页码：5301 / 5309
页数：9
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