scholarly journals The hot cracking susceptibility subjected the laser beam oscillation welding on 6XXX aluminum alloy with a partial penetration joint

2021 ◽  
Vol 33 (1) ◽  
pp. 012032
Author(s):  
Minjung Kang ◽  
Jason Cheon ◽  
Dong Hyuck Kam ◽  
Cheolhee Kim
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Hot Cracking ◽  
Partial Penetration ◽  
Beam Oscillation

Hot cracking in autogenous welding of 6061-T6 aluminum alloy by rectangular pulsed Nd:YAG laser beam

2020 ◽  
Vol 64 (6) ◽  
pp. 1077-1088
Author(s):  
Hossain Ebrahimzadeh ◽  
Hassan Farhangi ◽  
Seyed Ali Asghar Akbari Mousavi
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Nd:Yag Laser ◽  
Hot Cracking ◽  
Pulsed Nd:Yag Laser

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.

Numerical Simulation of Casting Deformation and Stress of A356 Aluminum Alloy Thin-Walled Frame Casting

2021 ◽  
Vol 1033 ◽  
pp. 24-30
Author(s):  
Yi Dan Zeng ◽  
Li Tong He ◽  
Jin Zhang
Keyword(s):  
Aluminum Alloy ◽  
Casting Process ◽  
Mold Temperature ◽  
Hot Cracking ◽  
Thin Wall ◽  
A356 Aluminum Alloy ◽  
Pouring Temperature ◽  
Thin Walled ◽  
Alloy Castings ◽  
A356 Aluminum

One of the main reasons for the scrap of cast thin-wall frame aluminum alloy castings is deformation and cracking. It is an effective method for solving the problem by predicting the distribution of casting stress, clarifying the size of the deformation and the location of the crack, and taking necessary measures in the process. This paper uses the ProCAST software to simulate the thermal stress coupling of A356 thin-walled frame castings, analyzes the influence of pouring temperature, pouring speed and mold temperature on the stress field distribution of castings, predicts the hot cracking trend and deformation, and optimizes Casting process..

Study on the influence rule of porosity defects for double-sided laser beam welding of aluminum alloy T-joint

2018 ◽  
Vol 47 (9) ◽  
pp. 906004
Author(s):  
杨志斌 Yang Zhibin ◽  
李浩哲 Li Haozhe ◽  
王 斌 Wang Bin ◽  
陈禹昕 Chen Yuxin
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Porosity Defects

scholarly journals Reduction of pores by means of laser beam oscillation during remote welding of AlMgSi

2018 ◽  
Vol 108 ◽  
pp. 68-77 ◽  
Author(s):  
Florian Fetzer ◽  
Martin Sommer ◽  
Rudolf Weber ◽  
Jan-Philipp Weberpals ◽  
Thomas Graf
Keyword(s):  
Laser Beam ◽  
Remote Welding ◽  
Beam Oscillation

Influence of ultrasonic amplitude and position in the vibration distribution on the microstructure of a laser beam welded aluminum alloy

2019 ◽  
Vol 31 (2) ◽  
pp. 022402 ◽  
Author(s):  
Sarah Nothdurft ◽  
Hendrik Ohrdes ◽  
Jens Twiefel ◽  
Jörg Wallaschek ◽  
Maximilian Mildebrath ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Beam

scholarly journals Comparison of Hot Cracking Susceptibility of TIG and Laser Beam Welded Alloy 718 by Varestraint Testing

Metals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 985 ◽  
Author(s):  
Pedro Alvarez ◽  
Lexuri Vázquez ◽  
Noelia Ruiz ◽  
Pedro Rodríguez ◽  
Ana Magaña ◽  
...  
Keyword(s):  
Grain Size ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Hot Cracking ◽  
Welding Parameters ◽  
Minor Effect ◽  
Alloy 718 ◽  
Material Source ◽  
Cross Sectional ◽  
Varestraint Test

Reduced hot cracking susceptibility is essential to ensure the flawless manufacturing of nickel superalloys typically employed in welded aircraft engine structures. The hot cracking of precipitation strengthened alloy 718 mainly depends on chemical composition and microstructure resulting from the thermal story. Alloy 718 is usually welded in a solution annealed state. However, even with this thermal treatment, cracks can be induced during standard industrial manufacturing conditions, leading to costly and time-consuming reworking. In this work, the cracking susceptibility of wrought and investment casting alloy 718 is studied by the Varestraint test. The test is performed while applying different welding conditions, i.e., continuous tungsten inert gas (TIG), low frequency pulsed TIG, continuous laser beam welding (LBW) and pulsed LBW. Welding parameters are selected for each welding technology in order to meet the welding quality criteria requested for targeted aeronautical applications, that is, full penetration, minimum cross-sectional welding width and reduced overhang and underfill. Results show that the hot cracking susceptibility of LBW samples determined by the Varestraint test is enhanced due to extended center line hot cracking, resulting in a fish-bone like cracking pattern. On the contrary, the minor effect of material source (wrought or casting), grain size and pulsation is observed. In fact, casting samples with a 30 times coarser grain size have shown better performance than wrought material.

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