Influence of Flux Coating During Dissimilar Welding of Copper with Brass Using ATIG Welding Process

2019 ◽  
pp. 95-103
Author(s):  
J. Durga Venkata Satyanarayana ◽  
Raghuraman Srinivasan ◽  
Venkatraman Ramamoorthi ◽  
Sivachidambaram Pichumani ◽  
B. Kamesh Srikar
Keyword(s):  
Welding Process ◽  
Dissimilar Welding

An Investigation of Dissimilar Welding Aluminum Alloys to Stainless Steel by the Tungsten Inert Gas (TIG) Welding Process

2017 ◽  
Vol 904 ◽  
pp. 19-23
Author(s):  
Van Nhat Nguyen ◽  
Quoc Manh Nguyen ◽  
Dang Thi Huong Thao ◽  
Shyh Chour Huang
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Welding Process ◽  
Dissimilar Materials ◽  
Welding Current ◽  
Tig Welding ◽  
Inert Gas ◽  
Dissimilar Welding ◽  
Adjacent Area ◽  
Welding Seam

Welding dissimilar materials has been widely applied in industries. Some of them are considered this as a strategy to develop their future technology products. Aluminum alloy and stainless steel have differences in physical, thermal, mechanical and metallurgic properties. However, selecting a suitable welding process and welding rods can solve this problem. This research aimed to investigate the T-joint welding between A6061 aluminum alloy and SUS304 stainless steel using new welding rods, Aluma-Steel by the Tungsten Inert Gas (TIG) welding process. The mechanical properties, the characteristics of microstructure, and component analysis of the welds have been investigated by the mechanical testing, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). As a result, the fracture occurred at the adjacent area between welding seam and A6061 alloys plate. The thermal cracking appeared at central welding-seam along the base metals if high welding current. A large amount of copper elements found in the welds due to using the new welding rod, Aluma-Steel rod.

scholarly journals Experimental review of thermal analysis of dissimilar welds of High-Strength Steel

2019 ◽  
Vol 58 (1) ◽  
pp. 38-49 ◽  
Author(s):  
Francois Njock Bayock ◽  
Paul Kah ◽  
Belinga Mvola ◽  
Pavel Layus
Keyword(s):  
Heat Treatment ◽  
Thermal Analysis ◽  
Heat Input ◽  
Power Plants ◽  
Welding Process ◽  
Postweld Heat Treatment ◽  
High Strength ◽  
Dissimilar Welding ◽  
Dissimilar Welds ◽  
Wide Range

Abstract Dissimilar welding offers exiting benefits for a wide range of engineering applications, such as automotive bodies, piping systems of nuclear power plants, health equipment. The main advantages of dissimilarwelding applications areweight reductions, lower costs, unique properties combinations, and improved energy-efficiency. The properties of dissimilar weld depend on the type of welding process used, the accuracy of the process parameters control, the characteristics of the base metal and the heat treatment procedures. The current study reviews the scientific literature on the topic of thermal analysis of dissimilar high-strength steels (HSS) welding. The review of experimental data was carried out to analyze the variable heat input effect on dissimilar welds. The results indicate the welds mechanical properties irregularity and reduction in toughness and tensile strength due to uneven changes in the microstructure. Furthermore, postweld heat treatment (PWHT) often resulted in the formation of intermetallic compounds whose properties are dependent on the duration of treatment. The research results can be used to optimize the heat input of the HSS welding process.

A review of dissimilar welding for titanium alloys with light alloys

2021 ◽  
Vol 118 (2) ◽  
pp. 213
Author(s):  
Yan Zhang ◽  
DeShui Yu ◽  
JianPing Zhou ◽  
DaQian Sun
Keyword(s):  
Chemical Properties ◽  
Welding Process ◽  
Fusion Welding ◽  
Dissimilar Welding ◽  
Ti Alloy ◽  
Comprehensive Overview ◽  
Light Alloys ◽  
Industrial Manufacturing ◽  
Improvement Measures ◽  
Physical And Chemical

Titanium (Ti) alloys are widely used in industrial manufacturing, medical treatment, vehicles, and other fields. When welded with other alloys, due to great differences in physical and chemical properties of these materials, cracks easily appear in the joint, and obtaining stable welded joints is difficult. Results show that brittle intermetallic compounds (IMCs) formed in the welding process could reduce the plasticity of the joint. This review aimed to provide a comprehensive overview of the recent progress in welding and joining of Ti alloy and light alloys and to introduce current research and application. The methods available for welding Ti alloy and light alloys included fusion welding, brazing, diffusion bonding, friction welding and reactive joining. In this study, control methods of brittle IMCs in the welding process of Ti and other alloys and various improvement measures studied at home and abroad are described.

Dissimilar Welding between 2205 Duplex Stainless Steel and API X52 High Strength Low Alloy Steel

2018 ◽  
Vol 18 ◽  
pp. 7-13
Author(s):  
Brahim Belkessa ◽  
Djamel Miroud ◽  
Billel Cheniti ◽  
Naima Ouali ◽  
Maamar Hakem ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Alloy Steel ◽  
Welding Process ◽  
High Strength ◽  
Dissimilar Welding ◽  
Low Alloy Steel ◽  
Shielded Metal Arc Welding ◽  
2205 Duplex Stainless Steel ◽  
Metal Arc Welding

This work purposes to investigate the microstructure and the mechanical behavior of dissimilar metals weld between 2205 duplex stainless steel (UNS 31803) and high strength low alloy steel API X52. The joining was produced by shielded metal arc welding process using two different filler metals, the duplex E2209 and austenitic E309 grade.The microstructures of the dissimilar welded joints have been investigated by optical microscopy, scanning electron microscopy and energy-dispersive spectroscopy (EDS). The EDS analysis performed at the API X52/weld metal interface showed an evident gradient of Cr and Ni between fusion and type II boundaries, where the highest hardness value was recorded.

MIG-Welding of Dissimilar Advanced High Strength Steel Sheets

2017 ◽  
Vol 885 ◽  
pp. 80-85 ◽  
Author(s):  
Eszter Kalácska ◽  
Kornél Májlinger ◽  
Enikő Réka Fábián ◽  
Pasquale Russo Spena
Keyword(s):  
Automobile Industry ◽  
Welding Process ◽  
High Strength Steels ◽  
High Strength ◽  
Tensile Specimen ◽  
Dissimilar Welding ◽  
Welding Parameters ◽  
Mig Welding ◽  
Advanced High Strength Steels ◽  
Steel Sheets

The need for steel materials with increasing strength is constantly growing. The main application of such advanced high strength steels (AHSS) is the automobile industry, therefore the welding process of different types of AHSSs in dissimilar welding joint was investigated. To simulate the mass production of thin steel sheet constructions (such as car bodies) automated metal inert gas (MIG) welding process was used to weld the TWIP (twinning induced plasticity) and TRIP (transformation induced plasticity) steel sheets together. The welding parameters were successfully optimized for butt welded joints. The joints were investigated by visual examination, tensile testing, quantitative metallography and hardness measurements. The TRIP steel side of the joints showed increased microhardness up to (450-500 HV0.1) through increased fraction of bainite and martensite. Macroscopically the tensile specimen showed ductile behaviour, they broke in the austenitic weld material.

scholarly journals Dissimilar welding of aluminum alloys 2024 T3 and 7075 T6 by TIG process with double tungsten electrodes

2021 ◽  
Author(s):  
Liamine Kaba ◽  
Mohammed Elamine Djeghlal ◽  
Seddik Ouallam ◽  
Sami Kahla
Keyword(s):  
Energy Dispersive Spectrometer ◽  
Welding Process ◽  
Dissimilar Welding ◽  
Tensile Fracture ◽  
Welding Parameters ◽  
Brittle Strength ◽  
Tungsten Electrodes ◽  
Arc Welding Process ◽  
7075 Alloy ◽  
Structural Hardening

Abstract The aim of this work is to study the metallurgical and mechanical properties of dissimilar assemblies of 2024 T3 and 7075 T6 structural hardening aluminum alloy by TIG twine electrode arc welding process. It will include a weld performed according to optimized welding parameters followed by a study of the macroscopic and microscopic evolution of the dissimilar assembly (2024–7075) using optical and scanning electron microscopy (SEM); In addition, the phase compositions were analyzed with an energy dispersive spectrometer (EDS). Tensile and microhardness tests were performed. The tensile fracture was observed by SEM. We have found that this process thins the weld bead and reduces the size of the heat affected zone (HAZ) of the welded joint. The microhardness is lower in the melted area and higher on the side of the area affected by the heat especially for 7075 alloy, resulting in brittle strength and a sudden drop in breaking strength.

scholarly journals Distortion Control for Dissimilar Welding of SS321 to Hastelloy C-276 with CO2 Laser Beam Butt Joints Using Taguchi Methods

2021 ◽  
Vol 8 (3) ◽  
pp. 461-466
Author(s):  
Gandu Guruvaiah Naidu ◽  
Sarojini Jajimoggala
Keyword(s):  
Laser Beam ◽  
Co2 Laser ◽  
Gas Flow ◽  
Laser Beam Welding ◽  
Welding Process ◽  
Taguchi Methods ◽  
Quality Characteristic ◽  
Dissimilar Welding ◽  
Bead Geometry ◽  
Butt Joints

The laser beam welding process is a promising technology because of its reliability and ability to automate the process easily. This study aims to analyze distortion for dissimilar laser weld joints. Hastelloy C276 and SS321 plates are joined by using the CO2 Laser beam welding. Welding current, welding speed and shielding gas flow are chosen as process parameters for preparing butt joints. Each of the factors has two levels to control the parameters of the output. Experimentation was conducted with four trails by using an L4 orthogonal array. The quality of the welds and bead geometry are verified through macrostructure examination. The Vernier height gauge was used for the measurement of distortion in the weldments. Lower the better-quality characteristic is chosen for the response. ANOVA studies identified laser power at 81%, the weld speed at 16% parameters is a contribution with a statistical of about 95%. Full penetration was observed for all the experimental trails.

scholarly journals Calculation of the Intermetallic Layer Thickness in Cold Metal Transfer Welding of Aluminum to Steel

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 35 ◽  
Author(s):  
Zahra Silvayeh ◽  
Bruno Götzinger ◽  
Werner Karner ◽  
Matthias Hartmann ◽  
Christof Sommitsch
Keyword(s):  
Intermetallic Layer ◽  
Welding Process ◽  
Optical Microscope ◽  
Metal Transfer ◽  
Bonding Interface ◽  
Dissimilar Welding ◽  
Cold Metal Transfer ◽  
Butt Welding ◽  
Cmt Welding ◽  
Cold Metal

The intermetallic layer, which forms at the bonding interface in dissimilar welding of aluminum alloys to steel, is the most important characteristic feature influencing the mechanical properties of the joint. In this work, horizontal butt-welding of thin sheets of aluminum alloy EN AW-6014 T4 and galvanized mild steel DC04 was investigated. In order to predict the thickness of the intermetallic layer based on the main welding process parameters, a numerical model was created using the software package Visual-Environment. This model was validated with cold metal transfer (CMT) welding experiments. Based on the calculated temperature field inside the joint, the evolution of the intermetallic layer was numerically estimated using the software Matlab. The results of these calculations were confirmed by metallographic investigations using an optical microscope, which revealed spatial thickness variations of the intermetallic layer along the bonding interface.

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