Affecting mechanism of deep cryogenic treatment on nugget zone softening in dissimilar aluminum alloys friction stir welded joint

2021 ◽  
pp. 111509
Author(s):  
Huijie Zhang ◽  
Qilong Guan ◽  
Jianling Song ◽  
Qiuzhi Gao ◽  
Xuliang Kong
Keyword(s):  
Aluminum Alloys ◽  
Welded Joint ◽  
Cryogenic Treatment ◽  
Nugget Zone ◽  
Deep Cryogenic Treatment ◽  
Friction Stir ◽  
Dissimilar Aluminum Alloys

scholarly journals Near-surface mechanical heterogeneities in a dissimilar aluminum alloys friction stir welded joint

2016 ◽  
Vol 108 ◽  
pp. 217-229 ◽  
Author(s):  
D. Texier ◽  
Y. Zedan ◽  
T. Amoros ◽  
E. Feulvarch ◽  
J.C. Stinville ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Welded Joint ◽  
Near Surface ◽  
Friction Stir ◽  
Dissimilar Aluminum Alloys

Multi-objective optimization of friction stir welding process parameters for joining of dissimilar AA5083/AA6063 aluminum alloys using hybrid approach

2016 ◽  
Vol 232 (4) ◽  
pp. 343-353 ◽  
Author(s):  
Saurabh Kumar Gupta ◽  
KN Pandey ◽  
Rajneesh Kumar
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Process Parameters ◽  
Hybrid Approach ◽  
Weld Nugget ◽  
Multi Objective Optimization ◽  
Nugget Zone ◽  
Friction Stir ◽  
Multi Objective ◽  
Dissimilar Aluminum Alloys

Joining of dissimilar aluminum alloys are widely used in automobile, aerospace and shipbuilding industries. The defect-free joining of aluminum alloys using conventional technique is a challenging task for a welding engineer. Friction stir welding has been established as one of the most promising processes for defects-free joining of aluminum alloys. In this study, a hybrid approach of grey relational analysis with principal component analysis, is applied for multi-objective optimization of process parameters for friction stir welding of dissimilar AA5083/AA6063 aluminum alloys. Three responses namely tensile strength, average hardness at weld nugget zone and average grain size at weld nugget zone, and four process parameters with three levels have been selected for the study. Taguchi method based L27 orthogonal array design matrix is used for experiments. The optimal set of process parameters using hybrid approach was found as 900 r/min of tool rotational speed, 60 mm/min of welding speed, 18 mm of shoulder diameter and 5 mm of pin diameter. Improved performance of each response was obtained from the confirmation tests at optimum level of parameters.

Microstructural Characterization and Temperature Analysis in Friction Stir Welding of A383/5052 Dissimilar Aluminum Alloys

2007 ◽  
Vol 561-565 ◽  
pp. 279-282 ◽  
Author(s):  
Masafumi Kokubo ◽  
Shinichi Kazui ◽  
Takao Kaneuchi ◽  
Yoshimasa Takayama ◽  
Hajime Kato ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Analytical Model ◽  
Heat Generation ◽  
Microstructural Characterization ◽  
Joint Line ◽  
Experimental Temperature ◽  
Temperature Analysis ◽  
Friction Stir ◽  
Dissimilar Aluminum Alloys

Microstructural characterization and temperature analysis have been performed in friction stir welding (FSW) of A383 and 5052 dissimilar aluminum alloys. Marked difference in microstructure was observed between joints with different arrangements of materials. The temperature at four points on each side of the joint line was measured during FSW in various conditions. In addition, an analytical model assumed that the work generated by the rotation of the tool led to the work for stirring materials and heat generation of the material and the tool. The temperature of the retreating side (RS) for the joint of the advancing side (AS):A383/RS:5052 was about 50K higher than that of AS, while the temperatures of AS and RS for the joint of AS:5052/RS:A383 were almost the same. The experimental temperature could be calculated reasonably by using the model with assumption of the work for stirring the material.

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