Microstructure and mechanical properties of ADC12/6063-T6 aluminum alloy butt joint achieved by metal inert gas groove welding

2018 ◽  
Vol 233 (10) ◽  
pp. 2120-2124
Author(s):  
Ye Wang ◽  
Mi Zhao ◽  
Hongyu Xu ◽  
Maoliang Hu ◽  
Zesheng Ji
Keyword(s):  
Mechanical Properties ◽  
Arc Welding ◽  
Welding Process ◽  
Weld Interface ◽  
Butt Joint ◽  
Inert Gas ◽  
Butt Joints ◽  
Arc Welding Process ◽  
The Impact ◽  
Silicon Particles

Metal inert gas arc welding process was implemented to join 6063T6 wrought alloy and ADC12 die-casting alloy using ER4047 filler metal. The microstructure of the weld seam and weld interface was investigated. The bonding strength of the butt joints was tested by Charpy U-notch impact test and tensile test. The results showed that a sound welding butt joint with finely silicon particles and excellent mechanical properties was formed, and the size of the silicon particles was nearly 2 μm. Compared with 6063T6 wrought alloy, the impact absorbing energies and the tensile strengths of the butt joint were higher and reached 1.173 kJ/cm2 and 205 MPa, respectively, and the fractures of all tensile specimens occur at the 6063T6 aluminum.

Hybrid Fiber Laser – Arc Welding of High Strength Low Alloy Steel

2014 ◽  
Vol 783-786 ◽  
pp. 663-668 ◽  
Author(s):  
Xin Jin Cao ◽  
Priti Wanjara ◽  
A. Bernard ◽  
Dominik Pudo ◽  
Cameron Munro ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Arc Welding ◽  
Welding Process ◽  
High Strength ◽  
Butt Joint ◽  
Hybrid Fiber ◽  
Butt Joints ◽  
Slow Cooling ◽  
High Laser ◽  
Arc Welding Process

High strength low alloy (HSLA) grade 80 (HSLA-80) steel with a thickness of 9.1-mm was successfully welded in a single pass using a 5-kW fiber laser combined with an arc welding process. It was found that the maximum gap size in the Y-groove butt joint configuration should remain below 0.2 mm for a 9.1-mm section thickness. Sound butt joints with no welding cracks but some minor microporosity were successfully obtained. However, an underfill defect was frequently observed on the top surface of the weldments. Underfilling could be mitigated through increasing the filler wire addition so as to exceed the groove volume; however, due to significant evaporation and expulsion of the molten pool at the high laser power density, the underfill defect would be difficult to fully eliminate. At slow cooling rates, slight softening in the heat affected zone (HAZ) was present in the mid-thickness region but its elimination is possible at high welding speeds.

Sensing and Control of Double-Sided Arc Welding Process

2002 ◽  
Vol 124 (3) ◽  
pp. 695-701 ◽  
Author(s):  
Y. M. Zhang ◽  
S. B. Zhang ◽  
M. Jiang
Keyword(s):  
Arc Welding ◽  
Current Practice ◽  
Welding Process ◽  
Butt Joint ◽  
Large Structures ◽  
Arc Welding Process ◽  
And Control ◽  
Number Of Passes ◽  
Welding Productivity ◽  
Thick Material

The welding industry is driven to improve productivity without sacrificing quality. For thick material welding, the current practice is to use backing or multiple passes. The laser welding process, capable of achieving deep narrow penetration, can significantly improve welding productivity for such applications by reducing the number of passes. However, its competitiveness in comparison with traditional arc welding is weakened by its high cost, strict fit-up requirement, and difficulty in welding large structures. In this work, a different method, referred to as double-sided arc welding (DSAW) is developed to improve the arc concentration for arc welding. A sensing and control system is developed to achieve deep narrow penetration under variations in welding conditions. Experiments verified that the pulsed keyhole DSAW system developed is capable of achieving deep narrow penetration on a 1/2 inch thick square butt joint in a single pass.

scholarly journals Hardfacing of AISI 1020 Steel by Arc Welding in Comparison with TIG Welding Processes

2012 ◽  
Vol 5 (1) ◽  
pp. 119-126 ◽  
Author(s):  
G. R. C. Pradeep ◽  
A. Ramesh ◽  
B. Durga Prasad
Keyword(s):  
Arc Welding ◽  
Welding Process ◽  
Tig Welding ◽  
Inert Gas ◽  
Sliding Velocity ◽  
Tungsten Inert Gas Welding ◽  
Wear Properties ◽  
Machine Parts ◽  
Arc Welding Process ◽  
Welding Processes

Hardfacing techniques are used for enhancing the life of various machine parts by rebuilding the worn out or eroded or corroded areas in them. In this paper, an attempt has been made to determine the better welding process to hardface AISI 1020 steel based on study of wear and other factors. Two types of welding processes - Arc welding and tungsten inert gas welding (TIG) have been compared. The study revealed that the specimens prepared using TIG welding process yielded better wear properties compared to the specimen prepared using Arc welding process till 1.256 m/s sliding velocity. Also it was observed that the Arc welding process yielded better wear properties for sliding velocities above 1.571 m/s. An attempt was made to study the reasons for getting the said results.© 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v5i1.11899        J. Sci. Res. 5 (1), 119-126 (2013) 

Investigating the Influence of the Power Supply Type upon the Weld Joints Properties and Health Characteristics of the Manual Arc Welding

2011 ◽  
Vol 704-705 ◽  
pp. 608-611 ◽  
Author(s):  
D.P. Ilyaschenko ◽  
D.A. Chinakhov
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Power Supply ◽  
Arc Welding ◽  
Welding Process ◽  
Weld Joints ◽  
Manual Arc Welding ◽  
Arc Welding Process ◽  
New Generation ◽  
The Given

The given work considers the influence of the power supply type (diode rectifier ВД-306 and upon new generation inverter Nebula-315) upon the chemical composition, microstructure, mechanical properties of the weld joints and health characteristics of the manual arc welding process.

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