Combined Laser Beam Welding and Brazing Process for Aluminium Titanium Hybrid Structures

Möller, Felix; Grden, Martin; Thomy, Claus; Vollertsen, Frank

doi:10.1016/j.phpro.2011.03.028

Cited by 58 publications

(29 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Strength increases with an increase in the welding speed, and therefore extremely high welding speed is good to dissimilar weldability for Ti and Al (Lee et al, 2013). The development of an appropriate system technology and the process development are described, focusing on the main influencing parameters of the process on joint properties (Moller et al, 2011). Temperature, and corresponding heating and cooling rates generate during laser processing of metallic glass.…”

Section: Introductionmentioning

confidence: 99%

Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

Kalaiselvan¹,

Elango²,

Nagarajan³

2017

IJASMM

View full text Add to dashboard Cite

Laser beam welding produces good quality welds with minimum shrinkage for sheet metal joints. The quality of welded joint depends upon surface morphology, hardness, mixing of liquid phases and metallurgical non-homogeneity induced by gradients of temperatures and cooling rate at the weld interface. In the present investigation, Titanium Grade5 (Ti) and AA2024 (Al) alloy dissimilar sheet metals are joined using Nd:YAG pulsed laser beam and the effect of welding speed on crack tendencies, the strength of weldment based on hardness and composition changes are studied. Test results reveal that higher welding speed eliminates cracks in weldment and improves surface morphology. From hardness test, it is observed that the strength of fusion zone is considerably improved at higher weld speed and the findings are supported by SEM and EDS studies.Keywords: laser beam welding; LBW; morphology; hardness; microstructure; composition.Reference to this paper should be made as follows: Kalaiselvan, K., Elango, A. and Nagarajan, N.M. (2017) N.M. Nagarajan is a retired Professor from National Institute of Technology, Calicut, Kerala, India. His current research deals with powder metallurgy, metal joining, foundry and control of welding processes. He has authored and co-authored more than 100 technical papers.

show abstract

Section: Introductionmentioning

confidence: 99%

Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

Kalaiselvan¹,

Elango²,

Nagarajan³

2017

IJASMM

View full text Add to dashboard Cite

show abstract

“…In the latter case it is also possible to additionally obtain the reduction of a structure weight. A primary condition formulated by design engineers in relation to such structural systems used in the production of tooling, automotive industry, aviation, electronics, production of equipment and heat exchangers in chemical industry is the possibility of joining the aforesaid materials using welding methods and ensuring good operational properties of joints [1,4,8,10,14].…”

Section: Introductionmentioning

confidence: 99%

“…Methods recommended for making such joints include few specialist fusion welding methods (electron beam welding, laser welding), pressure welding methods (diffusion welding, friction welding) and diffusion brazing [8][9][10][11][12][13][14][15]. Few available publications concerned with diffusion brazing indicate that the issue is still at the stage of laboratory tests [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Brazing of Titanium with Aluminium Alloys

Winiowski¹,

Majewski²

2017

Archives of Metallurgy and Materials

View full text Add to dashboard Cite

This study presents results of vacuum diffusion brazing of Grade 2 titanium with 6082 (AlMg1Si0.6Cu0.3) aluminium alloy using B-Ag72Cu-780 (Ag72Cu28) grade silver brazing metal as an interlayer. Brazed joints underwent shear tests, light-microscopybased metallographic examinations and structural examinations using scanning electron microscopy (SEM) and X-ray energy dispersive spectrometry (EDS). The highest quality and shear strength of 20 MPa was characteristic of joints brazed at 530°C with a 30-minute hold. The structural examinations revealed that in diffusion zone near the boundary with titanium the braze contained solid solutions based on hard and brittle Ti-Al type intermetallic phases determining the strength of the joints.

show abstract

“…Nuclear, chemical, aerospace and space industries strongly demand dissimilar joints of titanium and titanium alloys to austenitic stainless steel due to good corrosion resistance and satisfactory mechanical behavior [3]. This type of joints finds implementations in satellite cooling system, in the reprocessing plant at Kalpakkam in electrolytic dissolver unit, as well as in subassemblies of nuclear reactors and aircraft engines [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effect of brazing temperature on microstructure and mechanical properties of dissimilar joints of titanium/stainless steel joint brazed by Al interlayer

Szwed¹,

Konieczny²

2017

Przegląd Spawalnictwa

View full text Add to dashboard Cite

Wpływ temperatury spajania na mikrostrukturę oraz właściwości mechaniczne połączeń tytan/stal nierdzewna wykonanych przy użyciu aluminium mgr inż. Bartłomiej Szwed, dr hab. inż. Marek Konieczny -Kielce University of Technology.Autor korespondencyjny/Corresponding author: bartlomiej_szwed@o2.pl StreszczenieLutowanie dyfuzyjne zostało wykonane pomiędzy tytanem (Grade 2) a stalą nierdzewna (X5CrNi18-10) z wykorzystaniem foli aluminiowej o grubości 100 μm. Lutowanie zostało przeprowadzone w temperaturach od 550 do 700 °C w czasie 60 minut pod dociskiem 2 MPa w próżni. Wpływ temperatury na mikrostrukturę połączenia został przebadany na mikroskopie optycznym oraz elektronowym mikroskopie skaningowym wyposażonym w mikroanalizator rentgenowski (EDS). Na granicy stali nierdzewnej z aluminium wydzieliły się warstwy faz FeAl3 oraz Fe2Al5. Struktura załącza od strony tytanu składała się oraz warstw faz międzymetalicz-nych TiAl, TiAl2, TiAl3. Grubość warstw reakcyjnych rosła wraz ze wzrostem temperatury lutowania. Najwyższą wytrzymałość (91 MPa) uzyskano podczas testów ścinania technologicznego połączeń lutowanych w temperaturze 600 °C.Słowa kluczowe: lutowanie dyfuzyjne; tytan; stal nierdzewna; mikrostruktura; właściwości mechaniczne AbstractIn present investigation diffusion brazed joints between titanium (Grade 2) and stainless steel (X5CrNi18-10) using 100 μm thick aluminum foil as a filler metal were produced at the temperature range from 550 to 700 °C for 60 minutes under 2 MPa bonding pressure in vacuum. The effect of temperature on the microstructure was investigated using light optical microscopy and scanning electron microscopy equipped with an energy dispersive X-ray system (EDS) to determine chemical composition of joint. The FeAl3 and Fe2Al5 intermetallic layers were observed at the stainless steel-aluminum interfaces. At the aluminum-titanium interfaces TiAl, TiAl2, TiAl3 intermetallic layers were identified. The thickness of the reaction products increases with increase in the joining temperature. The highest shear strength (91 MPa) was achieved for samples prepared at 600 °C.

show abstract

Combined Laser Beam Welding and Brazing Process for Aluminium Titanium Hybrid Structures

Cited by 58 publications

References 2 publications

Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

Weld speed effects on quality of Ti/Al dissimilar metal joints using laser beam welding

Brazing of Titanium with Aluminium Alloys

Effect of brazing temperature on microstructure and mechanical properties of dissimilar joints of titanium/stainless steel joint brazed by Al interlayer

Contact Info

Product

Resources

About