Microstructure and nanomechanical behavior of friction stir welded joint of 7055 aluminum alloy

2021 ◽  
Vol 61 ◽  
pp. 311-321
Author(s):  
Wen Wang ◽  
Shengnan Yuan ◽  
Ke Qiao ◽  
Kuaishe Wang ◽  
Shengyi Zhang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Welded Joint ◽  
Friction Stir ◽  
7055 Aluminum Alloy

Study on the Microstructure and Mechanical Properties of Welding Joints of 7A05 Aluminum Alloy by FSW

2014 ◽  
Vol 496-500 ◽  
pp. 110-113
Author(s):  
Dong Gao Chen ◽  
Jin He Liu ◽  
Zhi Hua Ma ◽  
Wu Lin Yang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Welding Speed ◽  
Welded Joint ◽  
Optical Microscope ◽  
Nugget Zone ◽  
Friction Stir ◽  
Microstructure And Mechanical Properties ◽  
Welding Joints

The7A05 aluminum alloy of the 10mm thickness was welded by the friction stir welding. The microstructure and mechanical Properties of the welded joint was researched by the optical microscope, etc. The results showed: the microstructure of the weld nugget zone and the thermal mechanically affected zone were refined as the welding speed increasing when the rotate speed is constant. As the welding speed increasing the strength of extension of the welded joint is increasing at first and then stable basically. but the yield strength had no obvious change.

Experimental Study on Friction Stir Welding of Marine Grade Aluminum Alloy

2009 ◽  
Vol 25 (01) ◽  
pp. 21-26
Author(s):  
Pankaj Biswas ◽  
N. R. Mandal
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Welded Joint ◽  
Traverse Speed ◽  
Rotating Speed ◽  
Friction Stir ◽  
Weld Parameters ◽  
5083 Aluminum Alloy ◽  
Selection Of

Friction stir welding, a comparatively new joining technique, is mainly used for welding aluminum alloys. In the present work, an attempt has been made to study the effect of weld parameters of friction stir welding of marine grade 5083 aluminum alloy. Several test runs were conducted to assess the effects of tool rotating speed and tool traverse speed on the microstructure and mechanical properties of the welded joint. It was observed that the tool traverse speed has a significant effect on the end properties of the welded joint. Grain refinement was observed in the thermomechanically affected zone (TMAZ), which led to improved mechanical properties of the welded joint. However, an increase in welding speed keeping rotational speed constant led to deterioration of mechanical properties. The study strongly indicates a possibility of achieving a superior welded joint in marine grade 5083 aluminum alloy with adequate selection of process parameters.

Influence of Deep Rolling Process Parameters on Surface Residual Stress of AA7075-T651 Aluminum Alloy Friction Stir Welded Joint

2018 ◽  
Vol 939 ◽  
pp. 23-30 ◽  
Author(s):  
Adirek Baisukhan ◽  
Wasawat Nakkiew
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Residual Stresses ◽  
Compressive Residual Stress ◽  
Welded Joint ◽  
Rolling Process ◽  
Rolling Speed ◽  
Deep Rolling ◽  
Friction Stir ◽  
Rolling Pressure

Friction stir welding is most commonly used for joining aluminum alloy parts. After welding, residual stresses occurred in the welded joint caused by non-uniform cooling rate. Friction stir welding usually generates tensile residual stress inside the workpiece which affects the strength in addition to the fatigue life of materials. Compressive residual stress usually is beneficial and it can be introduced by mechanical surface treatment methods such as deep rolling, shot peening, laser shock peening, etc. In this research, deep rolling was used for inducing compressive residual stress on surface of friction stir welded joint. The residual stresses values were obtained from X-ray diffraction machine. Influence of three deep rolling process parameters: rolling pressure, rolling speed and rolling offset on surface residual stresses at the welded joint were investigated. Each factor had 2 levels (23 full factorial design). The statistical analysis result showed that the rolling pressure, rolling speed, rolling offset, interaction between rolling pressure and rolling speed, interaction between rolling speed and rolling offset were statistically significant factors, with the most compressive residual stress value approximately -391.6 MPa. The appropriated deep rolling process parameters on surface residual stress of AA7075-T651 aluminum alloy friction stir welded joint were 1) rolling pressure about 150 bar 2) rolling speed about 1,400 mm/min 3) rolling offset about 0.1 mm.

scholarly journals Metallurgical factors affection Vickers hardness of friction stir welded joint of 7075 aluminum alloy

2010 ◽  
Vol 60 (6) ◽  
pp. 275-281
Author(s):  
Tsutomu Ito ◽  
Xiaoyong Yun ◽  
Alexandre Goloborodko ◽  
Yoshinobu Motohashi ◽  
Goroh Itoh ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Vickers Hardness ◽  
Welded Joint ◽  
7075 Aluminum Alloy ◽  
Friction Stir
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