scholarly journals On the association between microhardness, corrosion resistance and microstructure of probeless friction stir spot welded Al-Li joint

2021 ◽  
Author(s):  
Q. Chu ◽  
S.J. Hao ◽  
W.Y. Li ◽  
X.W. Yang ◽  
Y.F. Zou ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Friction Stir ◽  
Spot Welded

scholarly journals Microstructural Characteristics and Mechanical Properties of Friction Stir Spot Welded 2A12-T4 Aluminum Alloy

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Huijie Liu ◽  
Yunqiang Zhao ◽  
Xingye Su ◽  
Lilong Yu ◽  
Juncai Hou
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Fracture Mode ◽  
Heat Input ◽  
Tensile Shear ◽  
Microstructural Characteristics ◽  
Friction Stir ◽  
Welding Heat Input ◽  
Mixed Fracture ◽  
Spot Welded

2A12-T4 aluminum alloy was friction stir spot welded, and the microstructural characteristics and mechanical properties of the joints were investigated. A softened microstructural region existed in the joint, and it consisted of stir zone (SZ), thermal mechanically affected zone (TMAZ), and heat affected zone (HAZ). The minimum hardness was located in TMAZ, and the average hardness value in SZ can be improved by appropriately increasing welding heat input. The area of complete bonding region at the interface increased with increasing welding heat input because more interface metals were mixed. In a certain range of FSSW parameters, the tensile shear failure load of the joint increased with increasing rotation speed, but it decreased with increasing plunge rate or decreasing shoulder plunging depth. Two kinds of failure modes, that is, shear fracture mode and tensile-shear mixed fracture mode, can be observed in the tensile shear tests, and the joint that failed in the tensile-shear mixed fracture mode possessed a high carrying capability.

Effect of PCBN tool grade on joint strength and tool life in friction stir spot welded DP 980 steel

Wear ◽  
2015 ◽  
Vol 328-329 ◽  
pp. 531-536 ◽  
Author(s):  
T. Hartman ◽  
M.P. Miles ◽  
S.-T. Hong ◽  
R. Steel ◽  
S. Kelly
Keyword(s):  
Tool Life ◽  
Joint Strength ◽  
Pcbn Tool ◽  
Friction Stir ◽  
Spot Welded

Fracture mechanism of refill friction stir spot-welded 2024-T4 aluminum alloy

2016 ◽  
Vol 86 (5-8) ◽  
pp. 1925-1932 ◽  
Author(s):  
Zhengwei Li ◽  
Shude Ji ◽  
Yinan Ma ◽  
Peng Chai ◽  
Yumei Yue ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Fracture Mechanism ◽  
Friction Stir ◽  
Spot Welded

Microstructure and morphology evolution of probeless friction stir spot welded joints of aluminum alloy

2018 ◽  
Vol 252 ◽  
pp. 69-80 ◽  
Author(s):  
W.Y. Li ◽  
Q. Chu ◽  
X.W. Yang ◽  
J.J. Shen ◽  
A. Vairis ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Welded Joints ◽  
Morphology Evolution ◽  
Friction Stir ◽  
Spot Welded
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