Evading the strength-corrosion trade-off dilemma of 5xxx aluminum alloys by cyclic plasticity

被引：0
作者：
Zhang, Yong [1 ]
Zhang, Lantian [1 ]
Zong, Le [1 ]
Kan, Lequn [1 ]
Li, Hao
Jiang, Lu [2 ]
Yang, Wenfeng [3 ]
Sun, Zhengming [1 ]
Zhang, Ruifeng [4 ]
Sun, Wenwen [1 ]
机构：
[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Peoples R China
[2] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3126, Australia
[3] Shihezi Joinchin Electrode Foil Co Ltd, Shihezi 21 North 8th Rd, Xinjiang 832000, Peoples R China
[4] Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
来源：
CORROSION SCIENCE | 2024年 / 237卷
基金：
中国国家自然科学基金;
关键词：
Al-Mg alloys; Mechanical properties; Corrosion; Portevin-Le Chatelier effect; Solute clusters; ENVIRONMENTALLY ASSISTED CRACKING; DYNAMIC PRECIPITATION; MG; SENSITIZATION; TEMPERATURE;
D O I：
10.1016/j.corsci.2024.112290
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Low-magnesium 5xxx (< 3 wt%) alloys effectively suppress sensitization but have low strength due to limited solid solution strengthening. This study shows that despite the lower driving force and slower precipitation kinetics in low-magnesium 5xxx alloys, applying cyclic plasticity can still enhance their strength through the formation of solute clusters. Additionally, these clusters reduce the concentration of free Mg atoms, effectively mitigating the Portevin-Le Chatelier effect. After sensitization treatment at 70 C-degrees for 2 months, the cyclically strengthened alloys even show improved intergranular corrosion resistance. Applying the CS method to lowmagnesium 5xxx alloys can better resolve the strength-corrosion trade-off dilemma.
引用
收藏
页数：10
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