Results 31 to 40 of about 809 (183)

Inhibiting weld cracking in high-strength aluminium alloys

Nature Communications, 2022
Fusion welding of 7000 series aluminum alloy is plagued by cracking from a fine equiaxed zone (FQZ). Here, the authors quantify key softening mechanisms, show the damage accumulation sequence, and propose a hybrid laser/arc welding strategy to mitigate ...
Yanan Hu, Shengchuan Wu, Yi Guo, Zhao Shen, Alexander M. Korsunsky, Yukuang Yu, Xu Zhang, Yanan Fu, Zhigang Che, Tiqiao Xiao, Sergio Lozano-Perez, Qingxi Yuan, Xiangli Zhong, Xiaoqin Zeng, Guozheng Kang, Philip J. Withers   +15 more
doaj   +1 more source

Undercuts in Laser Arc Hybrid Welding

Physics Procedia, 2014
AbstractUndercuts are usually an imperfection in welding that either continuously or sporadically form, especially when welding at high speed. Efforts, usually lowering the welding speed or overfilling, are applied to avoid undercuts as they can significantly lower the fatigue properties of the welded workpiece. Undercut formation is complex and occurs
Frostevarg, Jan, Kaplan, Alexander F.H.
openaire   +1 more source

Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Metals, 2019
Hybrid laser-arc welding offers many advantages, such as deep penetration, good gap bridge-ability, and low distortion due to reduced heat input. The filler wire which is supplied to the process is used to influence the microstructure and mechanical ...
Ömer Üstündağ, Vjaceslav Avilov, Andrey Gumenyuk, Michael Rethmeier   +3 more
doaj   +1 more source

Research On Laser-Arc Hybrid Welding Of Ht780 Steel

Welding in the World, 2011
The use of thick steel components that can be joined by one-layer-one-pass laser welding or laser-arc hybrid welding has been increasing with the trend of reducing the plate thickness by using higher strength steels. This has enhanced the demand for laser-arc hybrid welding of HT780 steels in the bridge and industrial machinery applications.
SUGA, Tetsuo, MURAI, Yasuo, KOBASHI, Taizo, UEYAMA, Tomoyuki, ERA, Tetsuo, UEDA, Yuji, SATO, Munenobu, HARA, Noriyuki   +7 more
openaire   +2 more sources

Microstructure homogeneity and mechanical properties of laser-arc hybrid welded AZ31B magnesium alloy

Journal of Magnesium and Alloys
Laser-arc hybrid welding of AZ31B magnesium alloy was carried out, the effects of welding parameters on weld formation, microstructure homogeneity and mechanical properties were investigated.
Yongkang Gao, Kangda Hao, Lianyong Xu, Yongdian Han, Lei Zhao, Wenjing Ren, Hongyang Jing   +6 more
doaj   +1 more source

Welding Characteristic Analysis of Hybrid Welding on 2014 Aluminum Alloy

International Journal of Electrochemical Science, 2013
The experiment of TIG arc and laser high-frequency pulse TIG hybrid welding for 2014 aluminum alloy with the thickness of 7mm were carried out. Through the two welding processes experiments, the correlation between welding process and joints structure as
Zongyu Gao, Jianjun Fang, Yinong Zhang, Guowei Ran, Shide Zhang   +4 more
doaj   +1 more source

Ultrasmall High‐Entropy Materials: Nanoscale Effects, Synthesis, and Mechanistic Insights

Advanced Functional Materials, EarlyView.
This review article focuses on sub‐10 nm high‐entropy materials that combine nanoscale design with complex compositions for next‐generation applications. ABSTRACT Ultrasmall high‐entropy nanomaterials (USHENMs, <10 nm) merge multicomponent chemistry with size‐dependent effects, forming a distinct class of materials with unprecedented properties.
Yueyue He, Wenbo Wang, Simon Schweidler, Yanjiao Ma, Ben Breitung, Torsten Brezesinski   +5 more
wiley   +1 more source

Analysis of laser-slag interaction in laser beam tandem submerged arc hybrid welding using high-speed imaging

Journal of Advanced Joining Processes
Industrial welding of large sheet thicknesses of around 40 mm is generally carried out by using a submerged arc welding process. Process-induced, a large number of weld passes are required to join the components.
M. Clemens, L. Knoll, S. Olschok, U. Reisgen   +3 more
doaj   +1 more source

Structure and Properties of Hybrid Laser Arc Welded T-Joints (Laser Beam – MAG) in Thermo-Mechanical Control Processed Steel S700MC of 10 mm thickness [PDF]

Archives of Metallurgy and Materials, 2018
In this article examinations of hybrid welding technology (laser beam + MAG) of T-joints from thermomechanically worked high strength steel S700MC 10 mm thick were presented. Joints welded from one side and both sides were made.
J. Górka
doaj   +1 more source

Numerical study on weld pool behaviors and keyhole dynamics in magnetic-field-assisted laser-arc hybrid welding of aluminum alloy

Journal of Materials Research and Technology, 2023
External magnetic field has been employed to improve appearance and suppress defects in the single laser or arc welding, and its physical mechanism in magnetic-field-assisted single laser or arc welding has been clearly clarified. However, few studies on
Caiwang Tan, Yang Dong, Haofeng Sun, Fuyun Liu, Xiong Han, Qijuan Dong, Bo Chen, Xiaoguo Song   +7 more
doaj   +1 more source