Regulating solute partitioning utilized to decorate grain boundary for improving corrosion resistance in a model Al-Cu-Mg alloy

被引：34
作者：
Liu, Xuebing [1 ]
Zhang, Di [2 ]
Wang, Hui [3 ]
Yan, Yu [4 ]
Zhang, Xinfang [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, State Key Lab Adv Met, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[3] Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610041, Peoples R China
[4] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Beijing 100083, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 181卷 / 181期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Pulsed electric field; Solute partitioning; Grain boundary precipitation; Solute depletion zone; Intergranular corrosion; INTERGRANULAR CORROSION; MECHANICAL-PROPERTIES; ALUMINUM-ALLOYS; PRECIPITATION; SEGREGATION; BEHAVIOR; MICROSTRUCTURE; AG; EMBRITTLEMENT; STRENGTH;
D O I：
10.1016/j.corsci.2020.109219
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The precise manipulation of grain boundary microstructure, including interfacial solute partition and precipitate distribution, is crucial for regulating the corrosion resistance of age-hardening aluminum alloys. In this study, we explored a novel manipulation pathway, the pulsed electric field (PEC), to regulate solute segregation to grain boundary to form a specific grain boundary structure. The calculated atomic diffusion results reveal that the PEC can stimulate atomic diffusion by decreasing the energy required for diffusion, through which the continuous distribution of grain boundary precipitates and solute depletion zone formation can be inhibited. Hence, the corrosion resistance is significantly improved.
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收藏
页数：17
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