Electrochemical corrosion of cryorolled and aged aluminum alloy

2019 ◽  
Author(s):  
S. Krymskiy ◽  
E. Avtokratova ◽  
O. Sitdikov ◽  
M. Markushev
Keyword(s):  
Aluminum Alloy ◽  
Electrochemical Corrosion

EIS Research of AW-7020 Alloy Joints Welded by FSW

2013 ◽  
Vol 199 ◽  
pp. 412-417 ◽  
Author(s):  
Krzysztof Dudzik ◽  
Adam Charchalis
Keyword(s):  
Aluminum Alloy ◽  
Electrochemical Impedance Spectroscopy ◽  
Friction Stir Welding ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
New Technology ◽  
Electrochemical Corrosion ◽  
Signal Amplitude ◽  
Corrosion Properties ◽  
Friction Stir

The results of corrosion properties research of aluminum alloy AW 7020 (AlZn5Mg1) welded by friction stir welding FSW were presented. Friction Stir Welding (FSW) a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. In the article the parameters for friction stir welding of sheets made of AlZn5Mg1 (7020) alloy was presented. The study was carried out in accordance with the requirements of the ASTM G 106. EIS measurement was performed in three electrode system in an artificial seawater (3.5% NaCl). Impedance studies were carried out at the corrosion potential. Changed voltage signal amplitude in the range ± 10 mV and frequency range of changes was as follows: 100 kHz - 0.1 Hz. Atlas 0531 EU & IA potentiostat was used for studies. The results of electrochemical impedance spectroscopy are presented in the form of parameters characterizing the corrosion process. Obtained results were statistically analyzed. The electrochemical impedance spectroscopy studies have shown that the joint welded by FSW has better electrochemical corrosion resistance than the native material - AW-7020 alloy. Original value are received results of the corrosion properties of new method friction stir welded AlZn5Mg1 alloy compared with the native material.

Effect of Laser Shock Processing on Electrochemical Corrosion Behavior of 7075 Aluminum Alloy Plasma Arc Weldments

2015 ◽  
Vol 42 (12) ◽  
pp. 1203006
Author(s):  
王江涛 Wang Jiangtao ◽  
张永康 Zhang Yongkang ◽  
陈菊芳 Chen Jufang ◽  
周金宇 Zhou Jinyu ◽  
卢雅琳 Lu Yalin ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Corrosion Behavior ◽  
Electrochemical Corrosion ◽  
7075 Aluminum Alloy ◽  
Plasma Arc ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Electrochemical Corrosion Behavior ◽  
Shock Processing

Influence of Joining Method on Electrochemical Corrosion Properties of 7020 Aluminum Alloy Joints

2015 ◽  
Vol 220-221 ◽  
pp. 589-594
Author(s):  
Krzysztof Dudzik
Keyword(s):  
Aluminum Alloy ◽  
Electrochemical Impedance Spectroscopy ◽  
Friction Stir Welding ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Electrochemical Corrosion ◽  
Signal Amplitude ◽  
Metallographic Analysis ◽  
Corrosion Properties ◽  
Friction Stir

The results of corrosion properties research of aluminum alloy AW 7020 (AlZn5Mg1) welded by friction stir welding (FSW) and MIG were presented. Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. In the paper, the parameters for friction stir welding of sheets made of AlZn5Mg1 [7020] alloy were presented as well as parameters for MIG. Metallographic analysis of bonds showed a proper structural construction of both, the FSW and MIG welded 7020 aluminum alloys.The study was carried out in accordance with the requirements of the ASTM G 106. EIS measurement was performed in three-electrode system in artificial seawater (3.5% NaCl). Impedance studies were carried out at the corrosion potential. Changed voltage signal amplitude in the range ±10 mV and frequency range of changes was as follows: 100 kHz – 0.1 Hz. Atlas 0531 EU & IA potentiostat was used for studies.The results of electrochemical impedance spectroscopy are presented in the form of parameters characterizing the corrosion process. Obtained results were statistically analyzed.The electrochemical impedance spectroscopy studies have shown that the joint welded by FSW has better electrochemical corrosion resistance than the joint welded by MIG and the native material – AW-7020 alloy.Original value are received results of the corrosion properties of new method friction stir welded AlZn5Mg1 alloy compared with traditional MIG method and the native material.

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