Effect of the Impact Load on Joining Region of the Friction Stir Jointing for 7022 Aluminum Alloy

2013 ◽  
Vol 568 ◽  
pp. 21-24
Author(s):  
Hong Feng Wang ◽  
J.L. Wang ◽  
W.W. Song ◽  
Dun Wen Zuo ◽  
X.L. Duan
Keyword(s):  
Aluminum Alloy ◽  
Impact Toughness ◽  
Base Metal ◽  
Process Parameters ◽  
Rotation Speed ◽  
Impact Load ◽  
Feed Speed ◽  
Friction Stir ◽  
The Impact ◽  
Joining Process

The impact experiment of the joining workpiece of the friction stir jointing for 7022 aluminum alloy was made by the impact load experiment machine. The objective was studying the effect of the different joining process parameters of the FSJ on impact toughness. The results showed the impact toughness of the joining region was lower than that of the base metal when the rotation speed of the tool was 300rpm and the feed speed was 30 and 50mm•min-1, the impact toughness of the joining region of the other joining process parameters was higher than that of the base metal. The impact toughness of the joining region was the best when the rotation speed of the tool was 400rpm and the feed speed was 100mm•min-1. It is higher than 22.3% of the base metal. The impact fracture of the joining region was mainly dimple; only fracture edge appeared a small amount of the quasi cleavage. The fracture presented good toughness.

scholarly journals Impact strength of Friction Stir Welded joints of dissimilar Aluminum alloy

2020 ◽  
Vol 9 (4) ◽  
pp. 2491-2496
Keyword(s):  
Aluminum Alloy ◽  
Impact Toughness ◽  
Impact Strength ◽  
Welded Joints ◽  
Response Surfaces ◽  
Design Matrix ◽  
Friction Stir ◽  
Contour Plots ◽  
Fsw Parameters ◽  
The Impact

Joining processes has been the heart of the manufacturing processes. Welding has played an important part in joining processes since its inception. Friction Stir Welding (FSW) has given promising results especially in the case of aluminum alloys. In the present paper, dissimilar aluminum alloy heat-treatable AA6082 T651and non-heat treatable AA 5083 O were friction stir welded as per design matrix generated according to the rotatable central composite design of response surface methodology. Impact toughness was measured from samples of welded joints. The impact toughness was mapped in terms of FSW parameters and the regression equation is generated. The response surfaces and contour plots are drawn and interpreted. The input parameters are optimized to achieve maximum impact strength. Confirmation runs were performed and found results were found close to the optimized values. The present research is useful for further augmentation of the FSW process of aluminum alloy.

Analysis of Friction and Wear Properties of 7075 Aluminum Alloy Modified by FSP

2020 ◽  
Vol 866 ◽  
pp. 135-142
Author(s):  
Sheng Rong Liu ◽  
Jian Li Wang ◽  
Hong Feng Wang ◽  
Xiao Le Ge ◽  
Jia Fei Pu
Keyword(s):  
Wear Resistance ◽  
Aluminum Alloy ◽  
Rotation Speed ◽  
Feed Speed ◽  
7075 Aluminum Alloy ◽  
Friction Stir ◽  
Tool Rotation Speed ◽  
Different Temperatures ◽  
Modified Layer ◽  
Tool Rotation

In this paper, the wear resistance of the different parameter (the tool rotation speed and feed speed) modified layer of the hot rolled 7075 aluminum alloy by the friction stir processing (FSP) were studied. The wear mechanism was explored by analyzing the surface morphologies of the modified layer after wear. The results showed that the wear resistance of 7075 aluminum alloy modified by FSP was superior to that of the base metal at different temperatures. The comprehensive wear resistance was better when the tool rotation speed and the feed speed were 500 rpm and 60 mm/min under different temperatures. Furthermore, the FSP parameters had a significant influence on the wear resistance of the modified layer. When the FSP parameters were too high or too low, the wear resistance would be reduced and the adhesive wear would appear. In addition, the modified layers obtained by different parameters received poor wear resistance when the temperature at high values.

Investigation of Dissimilar Joint between 356 and 7075 of Semi-Solid (SSM) Aluminum Alloy by Friction Stir Welding

2014 ◽  
Vol 931-932 ◽  
pp. 344-348 ◽  
Author(s):  
Worapong Boonchouytan ◽  
Jaknarin Chatthong ◽  
Surasit Rawangwong ◽  
Romadorn Romadorn ◽  
Prapas Muangjunburee
Keyword(s):  
Aluminum Alloy ◽  
Base Metal ◽  
Welding Speed ◽  
Rotation Speed ◽  
Tool Geometry ◽  
Butt Joints ◽  
Friction Stir ◽  
Tool Rotation Speed ◽  
Semi Solid ◽  
Tool Rotation

The objective of this research was to investigate the effect of parameters on the microstructure and mechanical properties of friction stir welded butt joints of dissimilar aluminum alloy sheets between Semi-Solid Metal (SSM) 356 and 7075. The base metal of SSM 356 and 7075 was located on the advancing side and the retreating side, respectively. The cylindrical pin was used as the welding tool geometry. Friction stir welded using different tool rotation speed (710, 1000 and 1400 rpm) and welding speed (80, 112 and 160 mm/min). The result indicated that the maximum average tensile strength of 205.13 MPa was achieved for the joint produced at tool rotation speed 1000 rpm, welding speed 160 mm/min. In addition, the metallurgy and welding structures of combined two types aluminium showed more definite than the base metal.

scholarly journals Analysis of metallographic structure and hardness of magnesium alloy area using friction stir welding

2019 ◽  
Vol 28 ◽  
pp. 096369351987276
Author(s):  
Wang Hongfeng ◽  
Zuo Dunwen ◽  
Liu Shengrong ◽  
Song Weiwei
Keyword(s):  
Grain Size ◽  
Friction Stir Welding ◽  
Magnesium Alloy ◽  
Process Parameters ◽  
Rotation Speed ◽  
Weld Zone ◽  
Weld Nugget ◽  
Feed Speed ◽  
Friction Stir ◽  
Metallographic Structure

The present work envisages the friction stir welding of AZ40 M magnesium alloy to analyze the influence of different process parameters (rotation speeds: 600, 800, and 1000 r/min; feed speeds: 100, 120, and 150 mm/min) on the metallographic structure at different locations in the weld zone. The welded regularity, analysis of the distribution law of the weld surface, and section hardness value (HV) were obtained under different welding process parameters. Our results show that, when the current feed rate was constant, the grain size of the weld nugget increased with an increase in the rotation speed. When the rotation speed was constant, the grain size of the weld nugget area decreased initially, which subsequently increased with an increase in the advance speed. When the rotation speed was 600 r/min and the feed speed was 120 mm/min, the nugget region grain was uniform, fine, and exhibited a highest HV.

scholarly journals Increasing of the Mechanical Properties of Friction Stir Welded Joints of 6061 Aluminum Alloy by Introducing Alumina Particles

2017 ◽  
Vol 17 (2) ◽  
pp. 29-40 ◽  
Author(s):  
M. A. Tashkandi ◽  
J. A. Al-Jarrah ◽  
M. Ibrahim
Keyword(s):  
Aluminum Alloy ◽  
Base Metal ◽  
Welded Joints ◽  
Volume Fraction ◽  
Welding Process ◽  
Welding Zone ◽  
6061 Aluminum Alloy ◽  
Friction Stir ◽  
Alumina Particles ◽  
Welding Line

AbstractThe main aim of this investigation is to produce a welding joint of higher strength than that of base metals. Composite welded joints were produced by friction stir welding process. 6061 aluminum alloy was used as a base metal and alumina particles added to welding zone to form metal matrix composites. The volume fraction of alumina particles incorporated in this study were 2, 4, 6, 8 and 10 vol% were added on both sides of welding line. Also, the alumina particles were pre-mixed with magnesium particles prior being added to the welding zone. Magnesium particles were used to enhance the bonding between the alumina particles and the matrix of 6061 aluminum alloy. Friction stir welded joints containing alumina particles were successfully obtained and it was observed that the strength of these joints was better than that of base metal. Experimental results showed that incorporating volume fraction of alumina particles up to 6 vol% into the welding zone led to higher strength of the composite welded joints as compared to plain welded joints.

scholarly journals Friction Stir Welding with Low-Medium-High Tool Travel Speed of 0.95 Mg-Al-Alloy and Pure Copper: Electrochemical and Surface Studies

2018 ◽  
Author(s):  
Neetesh Soni ◽  
Ambrish Singh
Keyword(s):  
Friction Stir Welding ◽  
Process Parameters ◽  
Pure Copper ◽  
Travel Speed ◽  
Localized Corrosion ◽  
Al Alloy ◽  
Kelvin Probe ◽  
Friction Stir ◽  
Surface Optical ◽  
Joining Process

The aim of this work is to assess the influence of Friction Stir Welding (FSW), process parameters, optimized tool traveling speed, and corrosion resistance of the 0.95 Mg-Al-alloy and pure copper weldment. Samples of aluminum-copper with and without deformation were characterized to investigate the metallurgical effects created during the welding deformation process. Effect of process parameters on microstructure and corrosion rate have been investigated for all the samples. All the electrochemical and polarization tests were done in 3.5 wt.% NaCl solution. Scanning Kelvin Probe (SKP) was done to detect the localized corrosion on the surface. Optical micrography observation indicated that the primary α-Al phase, which was formed during solidification can effectively limit the growth of Cu9Al4 phase. Finer acicular α-Al precipitates were observed in CuAl matrix during joining process that tends to coarser with the increase in tools travel speed. The electrochemical and polarization results showed that among all the tool travelling speed the specimen joined at tool travelling speed of 40 mm/min shows the best non-corrosive property.

Interfacial Reaction during Dissimilar Friction Stir Lap Welding of Aluminum Alloy to Stainless Steel

2014 ◽  
Vol 794-796 ◽  
pp. 389-394
Author(s):  
Tomo Ogura ◽  
Taichi Nishida ◽  
Makoto Takahashi ◽  
Hidehito Nishida ◽  
Mitsuo Fujimoto ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Intermetallic Compounds ◽  
Lap Joint ◽  
Friction Stir Lap Welding ◽  
Friction Stir ◽  
Transmission Electron ◽  
Lap Welding ◽  
Mixed Layers ◽  
Joining Process

A friction stir welded A3003 aluminum alloy /SUS304 stainless steel dissimilar lap joint was successfully produced. A sound joint that fractured at the base metal was obtained in the center region of the joint through the reaction layer of aluminum-rich intermetallic compounds with nanoorder thickness. The microstructural changes at the interface of the joint was examined by studying the hole left by the extracted welding tool produced at the end of the friction stir welding (FSW) bead using transmission electron microscopy (TEM). Mixed layers consisted of ultra-fined intermetallic compounds and stainless steel were observed. The stirred aluminum alloy flows onto the mixed layer after the tool transit and the joining was achieved. Based on the TEM observations, the joining process of the lap joint was also discussed.

Enhancing the Impact Toughness of ADC12 Aluminum Alloy by Alloying with Y and Solution Treatment

2018 ◽  
pp. 297-306 ◽  
Author(s):  
Zhenghua Huang ◽  
Yi Yao ◽  
Wenjun Qi ◽  
Chunjie Xu ◽  
Zhongming Zhang ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Impact Toughness ◽  
Solution Treatment ◽  
The Impact

Multi-Performance Optimization in Friction Stir Welding of Aluminum Alloy Using Response Surface Methodology

2018 ◽  
pp. 240-263
Author(s):  
Rajat Gupta ◽  
Kamal Kumar ◽  
Neeraj Sharma
Keyword(s):  
Response Surface Methodology ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Response Surface ◽  
Process Parameters ◽  
Performance Optimization ◽  
Desirability Function ◽  
High Carbon Steel ◽  
Friction Stir ◽  
Tool Shoulder

This chapter presents the friction stir welding (FSW) of aluminum alloy AA-5083-O using vertical milling machine. In present FSW experimentation, effects of different process parameter namely tool rotation speed, welding speed, tool geometry, and tool shoulder diameter have been determined on welding quality of two pieces of AA-5083-O using response surface methodology (RSM). The optimal sets of process parameters have been determined for weld quality characteristics namely tensile strength (UTS) and percentage elongation (%EL). In present experimentations, a specially designed tool made of high carbon steel with different shoulder diameters (15mm, 17.5mm, and 20 mm) having constant pin length (6 mm) were used for FSW of two pieces of aluminum alloy. The ANOVA and pooled ANOVA were used to study the effect of FSW parameters on UTS and %EL. Multi response optimization has been carried out using desirability function in conjunction with RSM to obtain the optimal setting of process parameters for higher UTS and lower %EL.

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