Mechanical properties of friction stir welded St 37 and St 44 steel joints

2018 ◽  
Vol 60 (12) ◽  
pp. 1163-1170 ◽  
Author(s):  
Tevfik Küçükömeroğlu ◽  
Semih Mahmut Aktarer ◽  
Güven İpekoğlu ◽  
Gürel Çam
Keyword(s):  
Mechanical Properties ◽  
Friction Stir ◽  
Steel Joints

Microstructure and mechanical properties of friction-stir welded St52 steel joints

2018 ◽  
Vol 25 (12) ◽  
pp. 1457-1464 ◽  
Author(s):  
Tevfik Küçükömeroğlu ◽  
Semih M. Aktarer ◽  
Güven İpekoğlu ◽  
Gürel Çam
Keyword(s):  
Mechanical Properties ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
St52 Steel ◽  
Steel Joints

Role of Induction Preheating on Tool Wear and Properties of Friction Stir Welded 409M Stainless Steel Joints

2015 ◽  
Vol 787 ◽  
pp. 401-405
Author(s):  
V.G. Vijay Prakaash ◽  
A. Vignesh ◽  
A.K. Lakshminarayanan ◽  
V. Balasubramanian
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Friction Stir Welding ◽  
Tool Wear ◽  
Friction Stir ◽  
Axial Forces ◽  
Degradation Analysis ◽  
Tool Profile ◽  
Steel Joints

An attempt is made to reduce the process forces and tool wear during friction stir welding of 409M ferritic stainless steel and to enhance the mechanical properties by induction preheating of base metal with different preheating temperatures at the leading of tool. It is observed that the preheating significantly decreased the longitudinal and axial forces. Tool degradation analysis was carried out to find out the loss of tool profile and material. Mechanical properties especially impact toughness values were increased due to significant reduction in the tool wear.

Effects of bottom plate in friction stir welding of AA6061-T6

2020 ◽  
Vol 118 (1) ◽  
pp. 108
Author(s):  
M.A. Vinayagamoorthi ◽  
M. Prince ◽  
S. Balasubramanian
Keyword(s):  
Mechanical Properties ◽  
Axial Load ◽  
Weld Zone ◽  
Welding Process ◽  
Bottom Plate ◽  
Welding Parameters ◽  
Nugget Zone ◽  
Friction Stir ◽  
Weld Joints ◽  
Fine Grain

The effects of 40 mm width bottom plates on the microstructural modifications and the mechanical properties of a 6 mm thick FSW AA6061-T6 joint have been investigated. The bottom plates are placed partially at the weld zone to absorb and dissipate heat during the welding process. An axial load of 5 to 7 kN, a rotational speed of 500 rpm, and a welding speed of 50 mm/min are employed as welding parameters. The size of the nugget zone (NZ) and heat-affected zone (HAZ) in the weld joints obtained from AISI 1040 steel bottom plate is more significant than that of weld joints obtained using copper bottom plate due to lower thermal conductivity of steel. Also, the weld joints obtained using copper bottom plate have fine grain microstructure due to the dynamic recrystallization. The friction stir welded joints obtained with copper bottom plate have exhibited higher ductility of 8.9% and higher tensile strength of 172 MPa as compared to the joints obtained using a steel bottom plate.

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