Friction Stir Welding Characteristics of 6061-T6 Aluminum Alloy Sheet

2015 ◽  
Author(s):  
Qun Gao ◽  
Hang Wei ◽  
Zhijian Zong
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Friction Stir

scholarly journals Experimental Investigation of Friction Stir Welding on 6061-T6 Aluminum Alloy using Taguchi-Based GRA

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1480
Author(s):  
Assefa Asmare ◽  
Raheem Al-Sabur ◽  
Eyob Messele
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Process Parameters ◽  
Rotational Speed ◽  
Weight Ratio ◽  
Welding Process ◽  
Quality Criteria ◽  
Alloy Sheet ◽  
Friction Stir ◽  
Weld Joints

The use of aluminum alloys, nowadays, is swiftly growing from the prerequisite of producing higher strength to weight ratio. Lightweight components are crucial interest in most manufacturing sectors, especially in transportation, aviation, maritime, automotive, and others. Traditional available joining methods have an adverse effect on joining these lightweight engineering materials, increasing needs for new environmentally friendly joining methods. Hence, friction stir welding (FSW) is introduced. Friction stir welding is a relatively new welding process that can produce high-quality weld joints with a lightweight and low joining cost with no waste. This paper endeavors to deals with optimizing process parameters for quality criteria on tensile and hardness strengths. Samples were taken from a 5 mm 6061-T6 aluminum alloy sheet with butt joint configuration. Controlled process parameters tool profile, rotational speed and transverse speed were utilized. The process parameters are optimized making use of the combination of Grey relation analysis method and L9 orthogonal array. Mechanical properties of the weld joints are examined through tensile, hardness, and liquid penetrant tests at room temperature. From this research, rotational speed and traverse speed become significant parameters at a 99% confidence interval, and the joint efficiency reached 91.3%.

scholarly journals Performance Analysis of Friction Stir Welded Lightweight Aluminum Alloy Sheet

2020 ◽  
Vol 52 (6) ◽  
pp. 821
Author(s):  
Hongfeng Wang ◽  
Dunwen Zuo ◽  
Shengrong Liu ◽  
Jiafei Pu ◽  
Weiwei Song
Keyword(s):  
Aluminum Alloy ◽  
Performance Analysis ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Friction Stir

scholarly journals Influences of Pin Shape on a High Rotation Speed Friction Stir Welding Joint of a 6061-T6 Aluminum Alloy Sheet

Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 987 ◽  
Author(s):  
Yang Zhou ◽  
Shujin Chen ◽  
Jiayou Wang ◽  
Penghao Wang ◽  
Jingyu Xia
Keyword(s):  
Friction Stir Welding ◽  
Aluminium Alloy ◽  
Rotation Speed ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Welding Quality ◽  
Nugget Zone ◽  
Friction Stir ◽  
High Rotation Speed ◽  
S Curve

In order to explore the influences of different pins on the weld based on the specialty of the aluminium alloy sheet welding, three kinds of pins were chosen to perform high rotation speed friction stir welding on a 1 mm thick 6061-T6 aluminium alloy in this study. The microstructure and mechanical properties of the joints were analysed at the same time. When the rotation speed was 11,000 rpm and the welding speed was 300 mm/min, more sufficient stirring and a better joint (the tensile strength reaches 87.2% of the base metal) can be obtained with the pin design of a quadrangular frustum pyramid. The pattern of the weld cross section was a “flat T” and no obvious “S curve” was found in nugget zone (NZ). Heat affected zone (HAZ) and thermo-mechanically affected zone (TMAZ) were also narrow. The results demonstrate that the proportion of low angle boundaries in each area of the weld is lower than that of traditional Friction Stir Welding (FSW). The grain size of NZ is significantly refined and the proportion of low angle boundaries is only 20.1%, which have improved the welding quality.

Joint Interface Morphology of Friction Stir Spot Welded Aluminum Alloy Sheets and Plated Steel Sheets

2010 ◽  
Vol 654-656 ◽  
pp. 970-973 ◽  
Author(s):  
Keyan Feng ◽  
Mitsuhiro Watanabe ◽  
Shinji Kumai
Keyword(s):  
Aluminum Alloy ◽  
Melting Temperature ◽  
Steel Sheet ◽  
Alloy Sheet ◽  
Zinc Alloy ◽  
Joint Interface ◽  
Aluminum Alloy Sheet ◽  
Pure Zinc ◽  
Friction Stir ◽  
Steel Sheets

Friction stir spot welding (FSSW) was applied to lap joining of aluminum alloy sheets and steel sheets. A 1.2 mm-thick non-plated carbon steel sheet and plated steel sheets with zinc alloy (ZAM), pure zinc (GI), zinc alloy including Fe (GA) and Al-Si alloy (AS) were prepared. The melting temperature of the plated layer is 330, 420, 880 and 640°C, respectively. A 1.1 mm-thick 6022 aluminum alloy sheet was overlapped on the steel sheet. A rotating tool was inserted from the aluminum alloy sheet side and the probe tip was kept at the position of 0.2 mm above the lapped interface for 3 seconds. For ZAM and GI, original plated layers were removed from the interface and intermediate layers were formed at the joint interface. This is because the melting temperature of the plated layer was lower than the interface temperature under the rotating probe tip during the FSSW. In contrast to that, the partial original plated layer remained after welding, and additional layer formed at the plated layer /aluminum alloy interface for GA. For AS, Al-Fe intermetallic compound layer, which was formed at the original Al-Si alloy plated steel surface remained.

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