The influences of rotational and welding speeds on microstructures and mechanical properties of friction stir welded Al5083 and commercially pure copper sheets lap joints

2013 ◽  
Vol 43 ◽  
pp. 80-88 ◽  
Author(s):  
H. Bisadi ◽  
A. Tavakoli ◽  
M. Tour Sangsaraki ◽  
K. Tour Sangsaraki
Keyword(s):  
Mechanical Properties ◽  
Pure Copper ◽  
Lap Joints ◽  
Friction Stir ◽  
Commercially Pure ◽  
Microstructures And Mechanical Properties ◽  
Commercially Pure Copper

scholarly journals Microstructure and Mechanical Properties of Friction Stir Welded Joints Between Commercially Pure Copper and Al 6351 Alloy

2017 ◽  
Vol 62 (3) ◽  
pp. 1819-1825
Author(s):  
V.C. Sinha ◽  
S. Kundu ◽  
S. Chatterjee
Keyword(s):  
Mechanical Properties ◽  
Welded Joints ◽  
Rotational Speed ◽  
Pure Copper ◽  
Stir Zone ◽  
Tool Rotational Speed ◽  
Friction Stir ◽  
Commercially Pure ◽  
Microstructure And Mechanical Properties ◽  
Commercially Pure Copper

AbstractIn the present study, the effect of tool rotational speed on microstructure and mechanical properties of friction stir welded joints between commercially pure copper and 6351 Al alloy was carried out in the range of tool rotational speeds of 300-900 rpm in steps of 150 rpm at 30 mm/minutes travel speed. Up to 450 rpm, the interface of the joints is free from intermetallics and Al4Cu9intermetallic has been observed at the stir zone. However, Al4Cu9intermetallic was observed both at the interface and the stir zone at 600 rpm. At 750 and 900 rpm tool rotational speed, the layers of AlCu, Al2Cu3and Al4Cu9intermetallics were observed at the interface and only Al4Cu9intermetallics has been observed in the stir zone. The maximum ultimate tensile strength of ~207 MPa and yield strength of ~168 MPa along with ~6.2% elongation at fracture of the joint have been obtained when processed at 450 rpm tool rotational speed.

A study on the microstructure and properties of Al/Cu lap joints welded by friction stir brazing with ultrahigh rotation speed

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040053
Author(s):  
Shujin Chen ◽  
Di Wang ◽  
Juan Pu ◽  
Jiaqi Zhang ◽  
Bin Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Axial Force ◽  
Filler Metal ◽  
Rotation Speed ◽  
Metal Layer ◽  
Pure Copper ◽  
Tensile Tests ◽  
Lap Joints ◽  
Friction Stir ◽  
Shoulder Diameter

Friction stir brazing (FSB) with ultrahigh rotation speed was applied to join 6061 aluminum to pure copper with the aid of zinc foil. The effects of different shoulder diameters on the microstructure and mechanical properties of Al/Cu FSB joints were investigated combined with temperature and axial force. In the joint brazed by a 7 mm diameter shoulder, the filler metal layer exhibited the original zinc. Meanwhile, a layer of thick [Formula: see text] was found on the Cu interface. As the diameter of the shoulder was increased to 10 mm, the homogeneous structure of Al–Zn eutectic formed at the Al–Cu interface. Further increasing the shoulder diameter to 12 mm, however, resulted in the interlayer obtaining a microstructure of Al–Zn eutectic with refined and dispersed [Formula: see text]. When the shoulder diameter increased to 15 mm, brittle intermetallic compounds (IMCs) such as [Formula: see text] and [Formula: see text] were generated and holes appeared owing to the high-temperature and axial force. Shear tensile tests showed that the joint brazed by a 12 mm diameter shoulder achieved the highest shear tensile strength.

Sign in / Sign up

Export Citation Format

Share Document