Insight on corrosion behavior of friction stir welded AA2219/AA2195 joints in astronautical engineering

被引：94
作者：
Xie, Yuming [1 ]
Meng, Xiangchen [1 ]
Wang, Feifan [2 ]
Jiang, Yimeng [2 ]
Ma, Xiaotian [1 ]
Wan, Long [1 ]
Huang, Yongxian [1 ]
机构：
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[2] China Acad Launch Vehicle Technol, Beijing Inst Astronaut Syst Engn, Beijing 100076, Peoples R China
来源：
CORROSION SCIENCE | 2021年 / 192卷
基金：
中国国家自然科学基金;
关键词：
Friction stir welding; Aluminum; Corrosion; Precipitation; Microstructures; MECHANICAL-PROPERTIES; EXFOLIATION CORROSION; CU/LI RATIO; ALUMINUM; RESISTANCE; ALLOYS; EVOLUTION; PRECIPITATION; STRENGTH; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2021.109800
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Corrosion behavior of friction stir welded Al-Cu alloy and Al-Cu-Li alloy joints were revealed via immersion, intergranular, exfoliation and electrochemical corrosion. Precipitation-driven corrosion was discussed based on experiments and theoretical modeling. The corrosion potential of the entire joint was nobler than base materials, which was mainly attributed to solid solution and precipitation evolution of high equilibrium potential elements. The macro/micro galvanic effect induced by the redistribution of copper was studied with a numerical model to explain the relationship between precipitation evolution and corrosion resistance. Reducing heat input by increasing welding speed was an effective strategy to improve corrosion resistance.
引用
收藏
页数：16
相关论文
共 69 条
[1]   Contrasting initial events of localized corrosion on surfaces of 2219-T42 and 6061-T6 aluminum alloys exposed in Caribbean seawater [J].
Acosta, Gloria ;
Veleva, Lucien ;
Luis Lopez, Juan ;
Lopez-Sauri, D. A. .
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2019, 29 (01) :34-42
[2]  
[Anonymous], 2018, GB/T 19746-2018
[3]  
[Anonymous], 2005, GB/T 7998-2005
[4]  
[Anonymous], 2008, GB/T 22639-2008
[5]  
[Anonymous], 2013, G4499 ASTM
[6]  
ASTM G110-92, G11092 ASTM
[7]  
ASTM G34-01, 2013, STANDARD TEST METHOD
[8]   Root-like C/SiC surface structure fabricated by the thermal and electrochemical corrosion for brazing to Nb [J].
Ba, Jin ;
Ji, Xu ;
Wang, Bin ;
Li, Peixin ;
Lin, Jinghuang ;
Qi, Junlei ;
Cao, Jian .
COMPOSITES PART B-ENGINEERING, 2021, 218
[9]   Study of stainless steels corrosion in a strong acid mixture. Part 2: anodic selective dissolution, weight loss and electrochemical impedance spectroscopy tests [J].
Bellezze, Tiziano ;
Giuliani, Giampaolo ;
Vicere, Annamaria ;
Roventi, Gabriella .
CORROSION SCIENCE, 2018, 130 :12-21
[10]   THE ANALYSIS OF ELECTRODE IMPEDANCES COMPLICATED BY THE PRESENCE OF A CONSTANT PHASE ELEMENT [J].
BRUG, GJ ;
VANDENEEDEN, ALG ;
SLUYTERSREHBACH, M ;
SLUYTERS, JH .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1984, 176 (1-2) :275-295
1234567