Microstructure and mechanical properties of dissimilar Al alloy/steel joints prepared by a flat spot friction stir welding technique

2013 ◽  
Vol 47 ◽  
pp. 350-357 ◽  
Author(s):  
Y.F. Sun ◽  
H. Fujii ◽  
N. Takaki ◽  
Y. Okitsu
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Alloy Steel ◽  
Al Alloy ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Steel Joints ◽  
Welding Technique

scholarly journals Effect of Stirring Pin Rotation Speed on Microstructure and Mechanical Properties of 2A14-T4 Alloy T-Joints Produced by Stationary Shoulder Friction Stir Welding

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1938
Author(s):  
Haifeng Yang ◽  
Hongyun Zhao ◽  
Xinxin Xu ◽  
Li Zhou ◽  
Huihui Zhao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Rotation Speed ◽  
Weld Nugget ◽  
Al Alloy ◽  
Nugget Zone ◽  
T Joints ◽  
Friction Stir ◽  
Stationary Shoulder ◽  
Microstructure And Mechanical Properties

In this study, 2A14-T4 Al-alloy T-joints were prepared via stationary shoulder friction stir welding (SSFSW) technology where the stirring pin’s rotation speed was set as different values. In combination with the numerical simulation results, the macro-forming, microstructure, and mechanical properties of the joints under different welding conditions were analyzed. The results show that the thermal cycle curves in the SSFSW process are featured by a steep climb and slow decreasing variation trends. As the stirring pin’s rotation speed increased, the grooves on the weld surface became more obvious. The base and rib plates exhibit W- or N-shaped hardness distribution patterns. The hardness of the weld nugget zone (WNZ) was high but was lower than that of the base material. The second weld’s annealing effect contributed to the precipitation and coarsening of the precipitated phase in the first weld nugget zone (WNZ1). The hardness of the heat affect zone (HAZ) in the vicinity of the thermo-mechanically affected zone (TMAZ) dropped to the minimum. As the stirring pin's rotation speed increased, the tensile strengths of the base and rib plates first increased and then dropped. The base and rib plates exhibited ductile and brittle/ductile fracture patterns, respectively.

Microstructure and Mechanical Properties of Dissimilar Al – Cu Joints Formed by Friction Stir Welding

2019 ◽  
Vol 60 (11-12) ◽  
pp. 734-738 ◽  
Author(s):  
E. N. Ryl’kov ◽  
F. Yu. Isupov ◽  
A. A. Naumov ◽  
O. V. Panchenko ◽  
A. I. Shamshurin
Keyword(s):  
Mechanical Properties ◽  
Friction Stir Welding ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties
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