Study of Friction Stir Welding on Aerospace Grade ZE41AMg Alloy and Its Comparison with Laser Beam Welding on ZE41AMg Alloy

2020 ◽  
pp. 249-262
Author(s):  
Adithyan Annamalai ◽  
T. R. Kishore Babu ◽  
S. Karthikeyan ◽  
N. Siddharth ◽  
S. Muralidharan
Keyword(s):  
Friction Stir Welding ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Friction Stir

scholarly journals Bifocal Hybrid Laser Beam Welding and Friction Stir Welding of Aluminium Extrusion Components

2008 ◽  
Vol 43 ◽  
pp. 69-80 ◽  
Author(s):  
Michael F. Zaeh ◽  
Paul Gebhard ◽  
Sonja Huber ◽  
Markus Ruhstorfer
Keyword(s):  
Composite Materials ◽  
Friction Stir Welding ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Welding Process ◽  
Global Market ◽  
Fusion Welding ◽  
Critical Parameters ◽  
Process Chain ◽  
Friction Stir

On a global market, new products are subject to rising requirements regarding strength and quality. Simultaneously, the conservation of the environment and natural resources has become a key priority. One approach to these demands is the weight reduction of mechanical components by lightweight construction. The Transregional Collaborative Research Center (TR 10), funded by the German Research Foundation (DFG), is therefore working on the “Integration of forming, cutting and joining for the flexible production of lightweight space structures”. The use of light metals, like aluminium and composite materials is a main part in the TR10 process chain. This paper deals with the challenges of welding of light weight components made out of EN AW-6060. It shows the use and potentials of two innovative joining processes, particularly suited for welding aluminium. Especially developed for the fusion welding of aluminium components, BHLW (Bifocal Hybrid Laser Beam Welding), combines a Nd:YAG and a high power diode laser. The paper will give insight into the findings of the achieved results so far and line out the further proceedings with regard to critical parameters and their effect on the overall laser welding process. For the welding of aluminium composite materials, which play a big role in the TR10 process chain, Friction Stir Welding (FSW) is evaluated. As a solid state joining process, it can be used for the welding of materials that are hardly weldable with fusion welding techniques. In this paper, results of basic experiment for the joining of reinforced aluminium and the resulting process forces are presented.

Comparison among the environmental impact of solid state and fusion welding processes in joining an aluminium alloy

2019 ◽  
Vol 234 (1-2) ◽  
pp. 140-156 ◽  
Author(s):  
M Bevilacqua ◽  
FE Ciarapica ◽  
A Forcellese ◽  
M Simoncini
Keyword(s):  
Life Cycle ◽  
Friction Stir Welding ◽  
Environmental Impact ◽  
Laser Beam ◽  
Welding Speed ◽  
Arc Welding ◽  
Laser Beam Welding ◽  
Fusion Welding ◽  
Friction Stir ◽  
Gas Tungsten Arc

The life-cycle assessment methodology was used to evaluate the environmental impact of friction stir welding of AA5754-H114 aluminium alloy sheets. Other works in literature considered the environmental impact of friction stir welding, but in this study the influence of different process parameters on midpoint category impacts were analysed. Friction stir welding was performed under different values of rotational and welding speeds. Moreover, pin tool wear and mechanical properties of joints were also evaluated. The pre- and post-processing stages were also considered. Raw materials, energy and all inputs associated with each stage of product life cycle were collected and evaluated to analyse the environmental impact index. The results showed that, irrespective of the rotational speed, the lowest welding speed investigated leads to the highest energy consumption and, consequently, to the highest values of the midpoint category impact. On the contrary, at the highest welding speed, the environmental impact assumes the lowest values. By concerning the rotational speed, its effect on the midpoint category impact is strongly reduced compared with the one given by the welding speed. A performance index, obtained by considering both the midpoint category impact and ultimate tensile strength of the joints, was also defined. Finally, the environmental sustainability of friction stir welding was compared with two different fusion welding technologies, namely gas tungsten arc welding and laser beam welding. The results showed that friction stir welding was characterized by midpoint category impacts much lower than those of the gas tungsten arc welding, while such discrepancies decreased with the laser beam welding.

scholarly journals Comparação das propriedades mecânicas de juntas de alumínio obtidas por soldagem a laser (LBW), por friction stir welding (FSW) e rebitadas para aplicação em estruturas aeronáuticas

2014 ◽  
Vol 19 (2) ◽  
pp. 145-151
Author(s):  
Rafael Humberto Mota de Siqueira ◽  
Aline Capella de Oliveira ◽  
Rudimar Riva ◽  
Antonio Jorge Abdalla ◽  
Milton Sérgio Fernandes de Lima
Keyword(s):  
Friction Stir Welding ◽  
Laser Beam ◽  
Laser Beam Welding ◽  
Friction Stir ◽  
Pull Test

Três processos de união de perfis de alumínio concorrem para a manufatura de painéis estruturais (união entre revestimento e reforçadores) aeronáuticos: rebitagem, Friction Stir Welding (FSW) e soldagem a laser (Laser Beam Welding - LBW). Esses processos têm vantagens e desvantagens particulares, as quais foram analisadas no presente estudo focando, especificamente, nas propriedades de tração do conjunto unido. Dois ensaios mecânicos foram considerados, T-pull test e Hoop test. No que tange ao ensaio T-pull, as amostras soldadas por LBW apresentam maior capacidade de suportar cargas. Isso se deve à melhor distribuição de cargas, quando a solicitação mecânica se faz pelo reforçador. No caso do ensaio Hoop, onde a solicitação mecânica se dá exclusivamente no revestimento, os resultados obtidos por FSW são notadamente superiores aos obtidos pelos demais processos, em termos de tensão máxima, tensão de escoamento e de alongamento máximo. Conclui-se que tanto o LBW quanto o FSW são métodos de soldagem com possibilidade de substituir a rebitagem comumente aplicada nas aeronaves comerciais.

Use of Novel Welding Technologies for High-Entropy Alloys Joining

2018 ◽  
Vol 941 ◽  
pp. 919-924 ◽  
Author(s):  
Sergey Zherebtsov ◽  
Nikita Stepanov ◽  
Dmitry Shaysultanov ◽  
Sergey Malopheyev ◽  
Igor Vysotskiy ◽  
...  
Keyword(s):  
Grain Size ◽  
Friction Stir Welding ◽  
Laser Beam ◽  
Weld Zone ◽  
Laser Beam Welding ◽  
High Entropy Alloys ◽  
Pronounced Increase ◽  
High Entropy ◽  
Friction Stir ◽  
Average Grain Size

Laser beam welding and friction stir welding of high entropy alloys (HEA) of the CoCrFeNiMn system were studied. The HEAs were produced by self-propagating high-temperature synthesis (SHS). Along with the principal elements, Al, C, S, and Si impurities were detected in the composition of the alloys. The as-cast alloys consisted of columnar fcc grains with coarse precipitates of MnS and fine Cr-rich M23C6carbides. Laser beam welding resulted in the formation of a defect-free weld joint. Precipitation of nanoscale B2 phase particles in the weld zone leaded to a pronounced increase in microhardness from ~150 HV of the base material to ~220 HV in the fusion zone. Friction stir welding (FSW) of a recrystallized state of the HEA with the average grain size of 3-5 μm resulted in the formation of a fine microstructure with a grain size of ~1.5 μm in the most strained area. Noticeable rise in strength and some decrease in ductility of the processed alloy in comparison with the initial condition can be associated with the formation of nanosized M23C6carbides.

Comparing mechanical behaviour of aluminium welds produced by laser beam welding (LBW), friction stir welding (FSW), and riveting for aeronautical structures

2016 ◽  
Vol 30 (7) ◽  
pp. 497-503 ◽  
Author(s):  
Rafael Humberto Mota de Siqueira ◽  
Aline Capella de Oliveira ◽  
Rudimar Riva ◽  
Antonio Jorge Abdalla ◽  
Milton Sérgio Fernandes de Lima
Keyword(s):  
Friction Stir Welding ◽  
Laser Beam ◽  
Mechanical Behaviour ◽  
Laser Beam Welding ◽  
Friction Stir
Sign in / Sign up

Export Citation Format

Share Document