scholarly journals Formation of laminate structure at the friction stir weld interface of aluminum alloy/steel lap joint

2007 ◽  
Vol 57 (11) ◽  
pp. 536-541 ◽  
Author(s):  
Mitsuhiro WATANABE ◽  
Takeshi OOKAWA ◽  
Shinji KUMAI
Keyword(s):  
Aluminum Alloy ◽  
Alloy Steel ◽  
Weld Interface ◽  
Friction Stir Weld ◽  
Laminate Structure ◽  
Lap Joint ◽  
Friction Stir

scholarly journals Effects of probe tip position on microstructure and bonding strength of friction stir welded aluminum alloy/steel lap joint

2007 ◽  
Vol 57 (11) ◽  
pp. 529-535 ◽  
Author(s):  
Shinji KUMAI ◽  
Hiromasa SATO ◽  
Kenta SUZUKI ◽  
Takeshi OOKAWA ◽  
Kwang-jin LEE ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Alloy Steel ◽  
Bonding Strength ◽  
Lap Joint ◽  
Friction Stir ◽  
Tip Position

Interfacial Reaction during Dissimilar Friction Stir Lap Welding of Aluminum Alloy to Stainless Steel

2014 ◽  
Vol 794-796 ◽  
pp. 389-394
Author(s):  
Tomo Ogura ◽  
Taichi Nishida ◽  
Makoto Takahashi ◽  
Hidehito Nishida ◽  
Mitsuo Fujimoto ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Intermetallic Compounds ◽  
Lap Joint ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Transmission Electron ◽  
Lap Welding ◽  
Mixed Layers ◽  
Joining Process

A friction stir welded A3003 aluminum alloy /SUS304 stainless steel dissimilar lap joint was successfully produced. A sound joint that fractured at the base metal was obtained in the center region of the joint through the reaction layer of aluminum-rich intermetallic compounds with nanoorder thickness. The microstructural changes at the interface of the joint was examined by studying the hole left by the extracted welding tool produced at the end of the friction stir welding (FSW) bead using transmission electron microscopy (TEM). Mixed layers consisted of ultra-fined intermetallic compounds and stainless steel were observed. The stirred aluminum alloy flows onto the mixed layer after the tool transit and the joining was achieved. Based on the TEM observations, the joining process of the lap joint was also discussed.

Effect of Residual Aluminum Thickness on Microstructure and Strength of Friction Stir Spot Welded Aluminum Alloy/Copper Lap Joint

2021 ◽  
Vol 1042 ◽  
pp. 3-8
Author(s):  
Mitsuhiro Watanabe ◽  
Shinpei Sasako
Keyword(s):  
Aluminum Alloy ◽  
Pure Copper ◽  
Optical Microscope ◽  
Copper Plate ◽  
Laminate Structure ◽  
Alloy Plate ◽  
Friction Stir ◽  
Residual Aluminum ◽  
Welding Interface ◽  
Aluminum Alloy Plate

Dissimilar metal lap joining of A5052 aluminum alloy plate and C1100 pure copper plate was performed by using friction stir spot welding. The rotating welding tool, which was composed of a probe part and a shoulder part, was plunged from the aluminum alloy plate which was overlapped on the copper plate, and residual aluminum alloy thickness under the probe part of the welding tool after plunging of the welding tool was controlled in the range from 0 mm to 0.4 mm. The strength of the welding interface was evaluated by using tensile-shear test. Microstructure of the welding interface was examined by using an optical microscope and a field emission scanning electron microscope. The welding was achieved at the residual aluminum alloy thickness under the probe part of the welding tool below 0.3 mm. The welded area was formed at aluminum alloy/copper interface located under the probe part of the welding tool, and its width increased with decreasing the residual aluminum alloy thickness. A characteristic laminate structure was produced in the copper matrix near the welding interface. In the joint fabricated at the residual aluminum alloy thickness below 0.1 mm, hook of Cu was formed at edge of the welded area. The fracture did not occur at the welding interface. A remarkable improvement in strength was observed in the joint fabricated at the residual aluminum alloy thickness below 0.1 mm. The formation of laminate structure and hook is considered to result in joint strength improvement.

Friction stir weld assisted diffusion bonding of 5754 aluminum alloy to coated high strength steels

2014 ◽  
Vol 55 ◽  
pp. 442-449 ◽  
Author(s):  
M. Haghshenas ◽  
A. Abdel-Gwad ◽  
A.M. Omran ◽  
B. Gökçe ◽  
S. Sahraeinejad ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Diffusion Bonding ◽  
High Strength Steels ◽  
High Strength ◽  
Friction Stir Weld ◽  
Friction Stir

Residual stress distribution and microstructure in the friction stir weld of 7075 aluminum alloy

2015 ◽  
Vol 50 (22) ◽  
pp. 7262-7270 ◽  
Author(s):  
Pengfei Ji ◽  
Zhongyu Yang ◽  
Jin Zhang ◽  
Lin Zheng ◽  
Vincent Ji ◽  
...  
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stress Distribution ◽  
Friction Stir Weld ◽  
7075 Aluminum Alloy ◽  
Friction Stir

scholarly journals Lap Joint of A5083 Aluminum Alloy and SS400 Steel by Friction Stir Welding

2005 ◽  
Vol 46 (4) ◽  
pp. 835-841 ◽  
Author(s):  
Kittipong Kimapong ◽  
Takehiko Watanabe
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Lap Joint ◽  
Friction Stir
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