Research on Strength Calculation Model of 7A05 Aluminum Alloy Welding Heat-Affected Zone

2011 ◽  
Vol 217-218 ◽  
pp. 880-885
Author(s):  
Ke Bin Jiang ◽  
Yong Ding ◽  
Ya Wen Liu ◽  
Feng Zheng
Keyword(s):  
Aluminum Alloy ◽  
Tensile Test ◽  
Welded Joint ◽  
Hardness Test ◽  
Data Fitting ◽  
Calculation Model ◽  
Strength Reduction ◽  
Strength Model ◽  
Reduction Zone ◽  
Experimental Data Fitting

In order to research the mechanic performance of 7A05 aluminum alloy, a series of tests, including tensile test about aluminum alloy substrate, tensile test about aluminum alloy butt welded joint, tensile test about transverse partition of aluminum alloy welded joint and hardness test were conducted. The results of these tests indicate that the strength and hardness of HAZ of this material exhibit a W-shaped reduction. There are an symmetrical softened area at 10~20mm from the center of weld. Due to ageing effect, the strength and hardness of HAZ can resume to 80%of the substrate one month after welding. Based on the analytical deduction and experimental data fitting, the theoretical strength model for HAZ of aluminum alloy is proposed. For the purpose of engineering design, the HAZ is transformed into a uniform strength reduction zone, the width and strength value is determined according to the principle of equal strength.

Determination of Mechanical Properties for Microhardness Mapping in a 5052 Aluminum Alloy Welded by Mig Process

2018 ◽  
Vol 930 ◽  
pp. 356-361
Author(s):  
José Costa de Macêdo Neto ◽  
Juarez Viégas Silva ◽  
Guilherme dos Santos Moreira ◽  
João Evangelista Neto ◽  
Flavio Silveira ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Tensile Test ◽  
Mechanical Strength ◽  
Optical Microscopy ◽  
Weld Pool ◽  
Gas Flow ◽  
Filler Metal ◽  
Welded Joint ◽  
Transfer Mode

Aluminum alloys are widely used in shipbuilding, it is a material with good mechanical strength, high corrosion resistance and good conformation. In this study we used the filler metal 5183 aluminum alloy, groove angle 80°, root opening 0,5mm, stick-out 12 a 14mm, voltage 23V, torch 99,99%Ar, transfer mode Pulsed, current 220A, wire speed 30cm/min, gas flow 25l/min. The aim of this study was to research the mechanical strength in a welded joint naval 5052 aluminum alloy welded by Metal Inert Gas-MIG process using a mapping microhardness and software images. They were also carried out the tensile test, chemical analysis of the studied alloy and optical microscopy. The results of microhardness showed that the weld pool showed lower values. Optical microscopy showed that the weld pool had bubbles and the tensile test was presented fracture in the welded joint.

Effect of Filler Metals on Microstructure and Mechanical Properties of GTAW Welded Joints of Aluminum Alloy (AA2024-T3)

2020 ◽  
Vol 38 (8A) ◽  
pp. 1236-1245
Author(s):  
Muna K. Abbass ◽  
Jihad G. Abd Ul-Qader
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Weld Metal ◽  
Tensile Test ◽  
Welded Joints ◽  
Filler Metal ◽  
Hardness Test ◽  
Butt Joint ◽  
Gtaw Process ◽  
Filler Metals

This study presents an appropriate filler metal or welding electrode to join aluminum alloy (AA2024-T3) sheet of 3.2 mm thickness with a square butt joint using Gas Tungsten Arc Welding (GTAW) process. This process was carried out at three different welding currents with three various filler metals: ER4047 (12% Si), ER4043 (5% Si), and ER5356 (5% Mg). Experiments were conducted to investigate the microstructure and the mechanical properties. The effect of various filler metals upon the weld joints quality were analyzed via an X-ray radiographic and tensile test. Hardness test, microstructures, SEM, and XRD also conducted to the welded specimens. It was found that the best result was at 100 Ampere with using filler metal (ER5356) which produced the highest strength of 240 MPa in comparison with welded joints with utilizing fillers (ER4043) and (ER4047) having values of 235 MPa and 225 MPa, correspondingly. The hardness results showed that the highest hardness values were at the weld metal for ER4047 and ER4043, then decreased to HAZ and increased in the base metal. While in the case of ER5356, the highest hardness was in HAZ and decreased in the weld metal. The fractography of the fracture surface of the welded joints after the tensile test was analyzed using SEM.

Peculiarities of AD33 aluminum alloy hand laser welding

2020 ◽  
Vol 2020 (12) ◽  
pp. 13-17
Author(s):  
Nikolay Proskuryakov ◽  
Uliana Putilova ◽  
Rasul Mamadaliev ◽  
Oleg Teploukhov
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Welding ◽  
Welded Joint ◽  
Comparative Investigation ◽  
Micro Structure ◽  
Joint Quality ◽  
Beam Motion

The comparative investigation results of AD33 aluminum alloy welded joint quality dependence upon changes in a laser beam motion rate for conditions of hand and automatic laser welding are shown. A micro-structure of a welded joint at the hand and automatic laser welding of the AD33 alloy is investigated.

Effect of Different Filler Towards Welding of AA6061 Al Alloy by X-Ray CT Scan

2010 ◽  
Vol 146-147 ◽  
pp. 1402-1405 ◽  
Author(s):  
Che Lah Nur Azida ◽  
Azman Jalar ◽  
Norinsan Kamil Othman ◽  
Nasrizal Mohd Rashdi ◽  
Md Zaukah Ibel
Keyword(s):  
Aluminum Alloy ◽  
Ct Scan ◽  
Welded Joint ◽  
Gas Metal Arc Welding ◽  
Butt Joint ◽  
Al Alloy ◽  
X Ray ◽  
Metal Arc Welding ◽  
Joint Quality ◽  
Filler Metals

AA6061 Aluminum alloy welded joint using two different filler metals were studied by using X-ray CT-Scan. The filler metals ER 4043 and ER 5356 were used in this present work in order to investigate the effect of using different filler metals on the welded joint quality of AA 6061 aluminum alloy in welded zone microstructure. Gas metal arc welding (GMAW) technique and V grove butt joint with four layers and five passes welded joint were performed. From this investigation, it is found that AA6061 with ER 4043 showed less distribution of porosity compared to AA6061 with ER 5356 welded joint confirmed by X-ray Ct-Scan. The decreasing of porosities and presence of very fine grains in weld region area with ER 5356 compared to ER 4043 will be discussed in term of microstructure analysis.

scholarly journals Static strength of friction welded joint of 6061 aluminum alloy to SUS304 stainless steel.

1996 ◽  
Vol 46 (10) ◽  
pp. 500-504 ◽  
Author(s):  
Hiizu OCHI ◽  
Koichi OGAWA ◽  
Yoshiaki YAMAMOTO ◽  
Shigeki HASHINAGA ◽  
Yasuo SUGA ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Welded Joint ◽  
Static Strength ◽  
6061 Aluminum Alloy ◽  
Sus304 Stainless Steel

A Constitutive Model of 6111-T4 Aluminum Alloy Sheet Based on the Warm Tensile Test

2013 ◽  
Vol 23 (3) ◽  
pp. 1107-1113 ◽  
Author(s):  
Lin Hua ◽  
Fanzhi Meng ◽  
Yanli Song ◽  
Jianing Liu ◽  
Xunpeng Qin ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Constitutive Model ◽  
Tensile Test ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet

An Investigation on Strength Deterioration of Aluminum Alloy Welded Joint under Thermal Cycling Conditions

2012 ◽  
Vol 482-484 ◽  
pp. 981-984
Author(s):  
Cheng Jin ◽  
Chun Yuan Shi
Keyword(s):  
Aluminum Alloy ◽  
Thermal Cycling ◽  
Welded Joint ◽  
Minor Effect ◽  
Key Factors ◽  
Strength Deterioration ◽  
Cyclic Temperature ◽  
Damage Process ◽  
A Minor ◽  
Cycling Condition

Effects of thermal cycling on the tensile strength of aluminum alloy welded joints are studied experimentally in this paper. The damage mechanisms are also analyzed based on the microstructure observations. Results reveal that certain thermal cycling can cause strength decrease especially at the heat affected zone of the aluminum alloy welded joint. The cyclic temperature and the external load are the key factors which influence the strength of the welded joint specimens, while the cyclic period has a minor effect in thermal cycling conditions. Microstructure analysis also shows that voids nucleation and evolution governs the damage process under thermal cycling condition.

scholarly journals SIMULATION OF THE BEHAVIOR OF TITANIUM-ALUMINUM COMPOSITE WITH WAVE PROFILE OF WELDED JOINT

2021 ◽  
pp. 37-42
Author(s):  
L. M. Gurevich ◽  
V. F. Danenko ◽  
V. Abo-Shakra
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Welded Joint ◽  
Tensile Deformation ◽  
Wave Profile ◽  
Relative Thickness ◽  
Aluminum Composite ◽  
Active Deformation ◽  
Element Simulation ◽  
Titanium Aluminum

The finite element simulation of tensile deformation of titanium-aluminum composite D20 - AD1 - VT6S was carried out. The composite had a wave profile of the welded joint at the boundaries D20 - AD1 and AD1 -VT6S. The thickness of the AD1 interlayer was varied in the simulation from 0.25 to 4 mm. The relative thickness of the interlayer corresponding to the onset of active deformation of the aluminum alloy has been determined.

Simulation of the Global Response of Welded Joint Using Digital Image Correlation Measurement

2013 ◽  
Vol 749 ◽  
pp. 597-600
Author(s):  
Chao He ◽  
Shi Ming Cui ◽  
Yan Zeng Wu ◽  
Ze Fu Luo ◽  
Qing Yuan Wang
Keyword(s):  
Digital Image Correlation ◽  
Tensile Test ◽  
Tensile Properties ◽  
Digital Image ◽  
Welded Joint ◽  
Pure Aluminum ◽  
Local Stress ◽  
Image Correlation ◽  
Global Response ◽  
Mechanical Heterogeneity

The effect of the mechanical heterogeneity on the global and local tensile properties of laser-arc hybrid welded joints in industrial pure aluminum has been investigated. Digital image correlation method has been used during tensile test for mapping the strain distribution and to determine the local stress-strain curves of FZ and HAZ. The tensile properties of the various regions are very heterogeneous and HAZ is the weakest region because of the strain localizes during tensile test. Finite element technique was used to model the global response of welded joint based on local constitutive properties which could be determined from DIC results.

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