Evaluation of Crack Sensitivity and Gap Bridging Ability during Laser Butt Welding of Aluminum 5J32 and 6K21 Alloys

2011 ◽  
Vol 695 ◽  
pp. 247-250 ◽  
Author(s):  
Young Nam Ahn ◽  
Cheol Hee Kim
Keyword(s):  
Laser Welding ◽  
Filler Metal ◽  
Welding Process ◽  
The Body ◽  
Filler Wire ◽  
Hybrid Welding ◽  
Body Structure ◽  
Butt Welding ◽  
Gap Bridging ◽  
6Xxx Series

Growing demand to reduce fuel consumption has accelerated the application of Al sheets to the body structure of automobiles. While recent studies on laser welding of Al 5xxx series and Al 6xxx series alloys have examined weldability, the laser autogenous welding usually results in low gap bridging capability and weld defects such as porosity, underfill, cracking, and so on. In this study, we evaluated the gap bridging capability and the crack sensitivity during laser autogenous welding, laser welding with filler wire, and laser-arc hybrid welding, respectively. Al 5J32 and 6K21 sheets were used as the base metal and Al 4xxx series and Al 5xxx series wires were used as the filler metal. Employing adequate welding conditions, the gap bridging capability during butt welding was investigated for each welding process. To clarify the solidification crack sensitivity, bead-on-plate welding was implemented for a tapered specimen as a self-restraint crack test. Compared with the laser autogenous welding, laser welding with filler wire and the laser-arc hybrid welding showed improved gap bridging capability and reduced crack sensitivity.

CO2 Laser - MIG Hybrid Welding of Titanium Alloy

2011 ◽  
Vol 264-265 ◽  
pp. 1270-1280
Author(s):  
Marco Brandizzi ◽  
Annunziata Anna Satriano ◽  
Luigi Tricarico
Keyword(s):  
Titanium Alloy ◽  
Cross Section ◽  
Working Conditions ◽  
Welding Process ◽  
Inert Gas ◽  
Welding Parameters ◽  
Hybrid Welding ◽  
Mig Welding ◽  
Butt Welding ◽  
Gap Bridging

CO2 laser - Metal Inert Gas (MIG) hybrid welding process was investigated in the butt welding of Ti-6Al-4V titanium alloy sheets of 3.0mm in thickness. Using a Design of Experiment (DoE) approach, bead on plate tests were planned with the aim to analyze the effect of laser and laser-MIG welding parameters on the bead shape, hardness profiles in the weld cross section and welding efficiency. Butt welds performed in correspondence of the bead on plate working conditions which assure the complete penetration of the samples, the absence of undercuts and the maximum welding efficiency, confirm the results of the bead on plate tests and highlights the gap bridging ability of the hybrid welding process.

Optimization of Laser-Arc Interspacing Distance during CO2 Laser-GMA Hybrid Welding by Using High-Speed Imaging

2007 ◽  
Vol 26-28 ◽  
pp. 481-484 ◽  
Author(s):  
Cheol Hee Kim ◽  
Hyun Byung Chae ◽  
Jun Ki Kim ◽  
Jeong Han Kim
Keyword(s):  
Laser Welding ◽  
Arc Welding ◽  
High Speed ◽  
Welding Process ◽  
Welding Parameters ◽  
Hybrid Welding ◽  
High Speed Imaging ◽  
Cross Sectional ◽  
Shipbuilding Industry ◽  
Gap Bridging

Laser welding has not easily been adopted in shipbuilding industry because of its poor gap bridging ability. Recently, laser-GMA hybrid welding process showed possibility to overcome the tight gap tolerance with improved productivity. The laser-arc hybrid welding process is inherently complex because it has three kinds of process parameters: arc welding, laser welding and hybrid welding parameters. In this study, welding phenomena were investigated to optimize the hybrid process parameter; interspacing distance between laser and arc. The bead surface and cross-sectional shapes were evaluated, and weld pool shape and droplet transfer were monitored by high speed camera to clarify welding phenomena.

Effect of Filler Wire on Laser Welding Process

2017 ◽  
Vol 54 (12) ◽  
pp. 120005 ◽  
Author(s):  
李时春 Li Shichun ◽  
许伟 Xu Wei ◽  
伍俏平 Wu Qiaoping
Keyword(s):  
Laser Welding ◽  
Welding Process ◽  
Filler Wire ◽  
Laser Welding Process

Analysis about the Jointing Status for Dissimilar Metals of Steel with Magnesium

2012 ◽  
Vol 233 ◽  
pp. 374-379 ◽  
Author(s):  
Zong Xiang Yao ◽  
De Ping Jiang ◽  
Chao Pan ◽  
Xiao Ming Wang
Keyword(s):  
Adverse Effect ◽  
Intermetallic Compound ◽  
Laser Welding ◽  
Welded Joint ◽  
Welding Process ◽  
Dissimilar Metals ◽  
Hybrid Welding ◽  
Pressure Welding ◽  
Diffusion Brazing ◽  
Welding Pressure

The research status of welding process between magnesium with steel have been surveyed．This article detailed the laser welding, Laser-TIG hybrid welding, pressure welding,diffusion brazing. The paper pointed out that it is a prominent problem of magnesium to be oxidated easily and existing intermetallic compound in the joint, which will produce adverse effect to property of welded joint. So how to control morphology and existence state of intermetallic compound (IMC) is the key for quality connectors in joining of magnesium with steel.

Development of an all-position YAG laser butt welding process with addition of filler wire

2005 ◽  
Vol 19 (6) ◽  
pp. 441-446 ◽  
Author(s):  
S Fujinaga ◽  
R Ohashi ◽  
T Urakami ◽  
S Katayama ◽  
A Matsunawa
Keyword(s):  
Welding Process ◽  
Filler Wire ◽  
Yag Laser ◽  
Butt Welding

2D Residual Stress and Hardness Maps in Steel Laser Weld with Filler Wire

2015 ◽  
Vol 732 ◽  
pp. 9-12 ◽  
Author(s):  
Kamil Kolařík ◽  
Karel Trojan ◽  
Jiří Čapek ◽  
Jiří Sís ◽  
Ondřej Řídký ◽  
...  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Laser Welding ◽  
Technological Process ◽  
Welding Process ◽  
Dynamic Loads ◽  
Filler Wire ◽  
Laser Weld ◽  
Friction Stir ◽  
Crucial Parameter

Residual stresses (RS) and welding process represent a traditional partnership between an ever evolving, and vital, technological process and a quantity characterizing the result of this process. As the modern way of joining materials is shifting gradually from conventional welding into friction stir or laser welding, RS remain a crucial parameter which gives clues about the welds’ behavior under dynamic loads. In this contribution the joint created by laser welding with filler wire is described by 2D maps of RS and hardness.

scholarly journals Development of All Position YAG Laser Butt Welding Process with Filler Wire

2004 ◽  
Vol 22 (3) ◽  
pp. 369-374 ◽  
Author(s):  
Shigeki FUJINAGA ◽  
Ryoji OHASHI ◽  
Taisuke URAKAMI ◽  
Seiji KATAYAMA ◽  
Akira MATSUNAWA
Keyword(s):  
Welding Process ◽  
Filler Wire ◽  
Yag Laser ◽  
Butt Welding

Study on Fiber Laser-VPTIG Hybrid Welding Process of 5083 Aluminum Alloy with Filler Wire

Applied laser ◽  
2014 ◽  
Vol 34 (3) ◽  
pp. 222-227
Author(s):  
李飞 Li Fei ◽  
孔晓芳 Kong Xiaofang ◽  
吴世凯 Wu Shikai ◽  
肖荣诗 Xiao Rongshi
Keyword(s):  
Aluminum Alloy ◽  
Fiber Laser ◽  
Welding Process ◽  
Filler Wire ◽  
Hybrid Welding ◽  
5083 Aluminum Alloy
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