Salt fog corrosion behavior of friction stir welded AA2014-T651 aluminum alloy

Salt fog corrosion test was employed to observe the corrosion behavior of welded joint of 7N01-T4 aluminum alloy of high-speed train. Tensile strength and hardness change after corrosion were tested and micro morphology was observed by metalloscope and LCSM. The results indicated that HAZ was the most sensitive corrosion zone in welded joint of 7N01-T4 in chlorinated moisture environment. Influenced by the heat-input of welding, the grains of HAZ were coarsening and inhomogeneous. A corrosion cell between welding seam with high Mg content and HAZ with high Zn content formed. HAZ corroded preferentially as anode, and the dissolving of zinc-rich phase in grain boundary resulted in the extending of corrosion crack along grain boundaries.

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Examining the influence of shoulder to pin diameter ratio on corrosion behavior of friction stir LM25 aluminum alloy with 10% silicon carbide particles

Metal Powder Report ◽

10.1016/j.mprp.2019.10.004 ◽

2020 ◽

Vol 75 (5) ◽

pp. 288-299

Author(s):

V. Senthil ◽

E. Balasubramanian

Keyword(s):

Silicon Carbide ◽

Aluminum Alloy ◽

Corrosion Behavior ◽

Diameter Ratio ◽

Friction Stir ◽

Silicon Carbide Particles ◽

Carbide Particles

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Stress corrosion behavior of friction stir welding joint of 7N01 aluminum alloy

Journal of Materials Research and Technology ◽

10.1016/j.jmrt.2021.08.112 ◽

2021 ◽

Vol 15 ◽

pp. 1130-1144

Author(s):

Yuzhe Pan ◽

Yu Wang ◽

Fuqiang Guo ◽

Tiehao Zhang ◽

Kenji Matsuda ◽

...

Keyword(s):

Aluminum Alloy ◽

Friction Stir Welding ◽

Stress Corrosion ◽

Corrosion Behavior ◽

Friction Stir ◽

Welding Joint

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The optimum combination of tool rotation rate and traveling speed for obtaining the preferable corrosion behavior and mechanical properties of friction stir welded AA5052 aluminum alloy

Materials & Design (1980-2015) ◽

10.1016/j.matdes.2013.03.027 ◽

2013 ◽

Vol 50 ◽

pp. 620-634 ◽

Cited By ~ 35

Author(s):

Mohiedin Bagheri Hariri ◽

Sajad Gholami Shiri ◽

Yadollah Yaghoubinezhad ◽

Masoud Mohammadi Rahvard

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Corrosion Behavior ◽

Rotation Rate ◽

Optimum Combination ◽

Friction Stir ◽

Tool Rotation Rate ◽

Aa5052 Aluminum Alloy ◽

Tool Rotation ◽

Traveling Speed

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Research on the Influence of Salt Fog Corrosion Behavior of 6005A Aluminum Alloy Welded Joints by Environment Humidity

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.662.251 ◽

2013 ◽

Vol 662 ◽

pp. 251-257

Author(s):

Ning Xia ◽

Zhi Min Zhu ◽

Hui Chen

Keyword(s):

Weight Loss ◽

Tensile Strength ◽

Aluminum Alloy ◽

Aluminum Alloys ◽

Relative Humidity ◽

Corrosion Rate ◽

Environmental Humidity ◽

Welding Joints ◽

Salt Fog Corrosion ◽

Salt Fog

6005A aluminum alloys were welded at different relative humidity conditions. The effects of relative humidity on the salt fog corrosion of the welding joints were researched. The results showed that the weight loss of the joints after 14 days corrosion was higher than that corroded after 7days, but the corrosion rate was lower. The corrosion rate first increased then declined with the increase of environmental humidity for the joints corroded for 7days. However, when the environmental humidity was 80%, corrosion rate achieved the maximum, when environment humidity was 70%, corrosion rate was the lowest. After corroded for 14 days, corrosion rate was the maximum when the environmental humidity was 50%, and it was the lowest when the environmental humidity was 90%. The tensile strength declined obviously after corrosion.

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