scholarly journals Dissimilar Metals Laser Welding between DP1000 Steel and Aluminum Alloy 1050

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 102 ◽  
Author(s):  
António Pereira ◽  
Ana Cabrinha ◽  
Fábio Rocha ◽  
Pedro Marques ◽  
Fábio Fernandes ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Mechanical Tests ◽  
Welding Parameters ◽  
Dissimilar Metals ◽  
Butt Welding ◽  
Electron Microscopes ◽  
1050 Aluminum Alloy ◽  
Scanning Electron Microscopes

The welding of dissimilar metals was carried out using a pulsed Nd: YAG laser to join DP1000 steel and an aluminum alloy 1050 H111. Two sheets of each metal, with 30 × 14 × 1 mm3, were lap welded, since butt welding proved to be nearly impossible due to the huge thermal conductivity differences and melting temperature differences of these materials. The aim of this research was to find the optimal laser welding parameters based on the mechanical and microstructure investigations. Thus, the welded samples were then subjected to tensile testing to evaluate the quality of the joining operation. The best set of welding parameters was replicated, and the welding joint obtained using these proper parameters was carefully analyzed using optical and scanning electron microscopes. Despite the predicted difficulties of welding two distinct metals, good quality welded joints were achieved. Additionally, some samples performed satisfactorily well in the mechanical tests, reaching tensile strengths close to the original 1050 aluminum alloy.

Effects of Nd: YAG Laser Welding Parameters on the Microstructure of 21% Cr Ferritic Stainless Steel

2011 ◽  
Vol 291-294 ◽  
pp. 999-1002
Author(s):  
Ke Ping Geng ◽  
Sheng Sun Hu ◽  
Jun Qi Shen ◽  
Jian Han ◽  
Hai Gang Xu
Keyword(s):  
Laser Welding ◽  
Optical Microscope ◽  
Welding Parameters ◽  
Slow Cooling ◽  
Yag Laser ◽  
Average Grain Size ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
The Relationship ◽  
Scanning Electron

21% Cr with Ti-Nb dual stabilized ferritic stainless was welded using Nd: YAG laser. The relationship between microstructure and parameters of laser welding was examined. The microstructure was investigated by using the optical microscope and scanning electron microscopes. The average grain size of the HAZ was increased with increasing heat input due to the slow cooling rate. Large precipitates as TiN, TiC and Nb(C,N) were dissolved in the HAZ. Fine precipitates which supposed to be TiC was formed uniformly distributed in the case of the fusion zones.

Research on Laser Micro Welding of an Aluminum Alloy Pressure Sensor

2015 ◽  
Vol 1114 ◽  
pp. 160-165 ◽  
Author(s):  
Robert Ciobanu ◽  
Octavian Donţu ◽  
Daniel Besnea ◽  
Victor Constantin ◽  
Doina Cioboata
Keyword(s):  
Aluminum Alloy ◽  
Laser Welding ◽  
Surrounding Medium ◽  
Laser Beam Welding ◽  
Pressure Sensors ◽  
Welding Process ◽  
Welding Parameters ◽  
Surface Pretreatment ◽  
Very High

This paper presents in detail the laser welding of a new mechatronic component belonging to the pressure sensors made ​​by aluminum alloy AW2007. Due to very high reflectivity of aluminum alloys, fast oxidation, the absorption of gases from the surrounding medium, special difficulties arise at laser beam welding and most situations require appropriate surface pretreatment. Given these issues, the paper present an experimental study on the influence of welding parameters on the seam quality for the aluminum alloy AW2007. In addition of the study regarding the influence of welding parameters, such as, laser power, welding speed, we conducted an analysis on the influence of the initial temperature of the material on the quality of the weld. Besides these aspects the paper presents a constructive solution for a device used to optimize the laser welding process of the sensor.

Optimizing the welding parameters for Straight tube butt welding of dissimilar metals

2021 ◽  
Author(s):  
C. Ahilan ◽  
S. Santhosh Kumar ◽  
S. Ramesh Kumar ◽  
S. Abdul Gudoos ◽  
Senthil Kumaran Selvaraj
Keyword(s):  
Welding Parameters ◽  
Dissimilar Metals ◽  
Straight Tube ◽  
Butt Welding

scholarly journals Preliminary Research on Influence of Welding Parameters Strength at Welded Joints in Ribbed Reinforcing Steel

2020 ◽  
Vol 14 (3) ◽  
pp. 369-374
Author(s):  
Željko Bilić ◽  
Ivan Samardžić ◽  
Nedjeljko Mišina ◽  
Katarina Stoić
Keyword(s):  
Welded Joint ◽  
Welding Process ◽  
Welding Parameters ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Butt Welding ◽  
Control Interface ◽  
High Level ◽  
Non Destructive

As already known, no proper control or process control parameter which absolutely guarantees a high level quality of joints made by electro-resistive welding has been established so far, especially when all possible parameters are taken into account during the welding process. Due to the process of butt-welding being very short-lived, ensuring quality of the joints is a difficult and under-researched problem. The application of non-destructive testing methods to the control interface joints is also not reliable. Therefore, further research in this area should concentrate on studying the influence of basic welding parameters, and calculating their direct or indirect impact can serve to achieve a highquality welded joint with for practice sufficient accuracy.

Temperature field simulation and grain morphology on laser welding-brazing between Ti-6Al-4V and 1050 aluminum alloy

2019 ◽  
Vol 6 (5) ◽  
pp. 056551 ◽  
Author(s):  
Xiaohong Zhan ◽  
Hengchang Bu ◽  
Qiyu Gao ◽  
Tingyan Yan ◽  
Wanli Ling
Keyword(s):  
Aluminum Alloy ◽  
Temperature Field ◽  
Laser Welding ◽  
Grain Morphology ◽  
Field Simulation ◽  
1050 Aluminum Alloy

Effect of Laser Welding Parameters on Forming Behavior of Tailor Welded Blanks

2012 ◽  
Vol 445 ◽  
pp. 406-411 ◽  
Author(s):  
R. Safdarian Korouyeh ◽  
Hassan Moslemi Naeini ◽  
M.J. Torkamany ◽  
J. Sabaghzadee
Keyword(s):  
Laser Welding ◽  
Nd:Yag Laser ◽  
Dissimilar Materials ◽  
Uniaxial Tensile ◽  
Welding Parameters ◽  
Uniaxial Tensile Test ◽  
Tailor Welded Blanks ◽  
Weld Properties ◽  
Single Sheet

Tailor Welded Blanks (TWB) are blanks in which two or more sheets of similar or dissimilar materials, thicknesses, coatings etc. are welded together to form a single sheet before forming. Forming behavior of TWBs is affected by thickness ratio, strength ratio, weld conditions such as weld properties, weld orientation, weld location etc. In this work, Nd:YAG laser welding will be use to weld TWB with different thickness in experimental test. Nd:YAG laser welding parameters such as pulse duration, welding velocity, frequency and peak power will affect formability of TWBs. Taguchis design of experiments methodology is followed to design of experiment and obtain the percentage contribution of factors considered. Erichsen formability test and uniaxial tensile test (ASTM-E8) will be use in experiment setup to compare result of different welding parameters on formability quality of TWBs.

Crystallographic Aspects of Deformation and Recrystallization in ECAP-Processed AA3104 Aluminium Alloy

2012 ◽  
Vol 186 ◽  
pp. 98-103
Author(s):  
Henryk Paul ◽  
Thierry Baudin ◽  
Anna Tarasek ◽  
François Brisset
Keyword(s):  
Aluminum Alloy ◽  
Shear Bands ◽  
Microstructure Development ◽  
Commercial Purity ◽  
Local Orientation ◽  
Ecap Processing ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
Equiaxed Grains ◽  
Scanning Electron

The objective of this study was to determine the effect of ECAP-processing on the texture and the microstructure development of the deformed and recrystallized states. The commercial purity AA3104 aluminum alloy was deformed via route A up to 7 passes and then annealed to obtain the state of partial recrystallization. The shear bands formation and the texture transformation in annealing were investigated with the use of high resolution transmission and scanning electron microscopes equipped with the facilitates for the local orientation measurements. It was found that the instability of the layered structure of the flat grains within some narrow areas led to the formation of the kink-type bands, which were precursors of the shear bands. The orientations of the new grains occurring in the recrystallized samples were not random, i.e. only specific groups of orientations were observed. In most of the observed cases, the growth of the recrystallized grains led to nearly homogeneous equiaxed grains of a similar size.

scholarly journals Explosion Cladding of Lead on Steel

10.14311/1570 ◽  
2012 ◽  
Vol 52 (3) ◽  
Author(s):  
Milan Turňa ◽  
Jozef Ondruška ◽  
Zuzana Turňová
Keyword(s):  
Electron Microscopy ◽  
Mechanical Tests ◽  
Welding Parameters ◽  
Optical And Electron Microscopy ◽  
Weld Overlays

This work deals with explosion cladding of lead on steel. The welded materials and the Semtex S type explosive are characterised. The preparation of the welded materials and the proposed welding assembly are described. The welding parameters, the welding conditions and the fabrication of the weld overlays are discussed. The quality of the fabricated bimetals was studied by optical and electron microscopy and by mechanical tests.

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