Properties of welded joints of layered composite materials based on aluminum alloys

2020 ◽  
pp. 199-203
Author(s):  
V.V. Ovchinnikov ◽  
S.V. Yakutina ◽  
I.A. Kurbatova ◽  
E.V. Luk’yanenko
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Arc Welding ◽  
Spot Welding ◽  
Layered Composite ◽  
Bend Angle ◽  
Butt Joints ◽  
Friction Stir

The properties and structure of the joints of the layered composite material based on aluminum alloys 1570— 1915—1570, made by resistance spot welding, automatic argon arc welding and friction stir welding are presented. The spot, lap and butt joints are made. The strength of the joints made by automatic argon arc welding with the AMg63 fi lling wire was 333...377 MPa at 180° bend angle. The butt joints obtained by the friction stir welding have strength factor of 0.90...0.92 from the strength of the base metal.

Features for friction stir welding of butt joints of casting VAL8 alloy with wrought 1565chN2 and AMg6M alloys

2021 ◽  
pp. 441-449
Author(s):  
V.A. Berezina ◽  
V.V. Ovchinnikov ◽  
E.V. Luk'yanenko
Keyword(s):  
Grain Size ◽  
Tensile Strength ◽  
Friction Stir Welding ◽  
Chemical Composition ◽  
Arc Welding ◽  
Butt Joints ◽  
Friction Stir ◽  
Discrete Nature ◽  
Casting Aluminum ◽  
Tool Rotation

The results of technological features for friction stir welding of butt joints of sheet blanks with thickness of 3 mm made of casting aluminum V AL8 alloy with wrought magnalium group 1565chN2 and AMg6M alloys are presented. It is established that the time resistance of the joints depends on the location of the welded alloys relative to the direction of tool rotation during friction stir welding. The ultimate strength of welded joints of VAL8 alloy with 1565chN2 and AMg6 alloys in automatic argon-arc welding is 0.82...0.84 of the ultimate tensile strength of VAL8 alloy. The grain size in the stir zone practically does not depend on the initial grain size in the alloys to be joined. The destruction of the joints made of VAL8 + 1565chH2 alloys under cyclic loading has multi-focal character and is initiated from irregularities on the surface of the weld. The discrete nature of the change in the chemical composition of the weld metal along the axis of the weld is revealed. The weld is formed by alternating strips of connected alloys with width of 30...90 microns.

An overview of R&D work in friction stir welding at SMU

10.30544/381 ◽  
2006 ◽  
Vol 12 (4) ◽  
pp. 275-295 ◽  
Author(s):  
V. SOUNDARARAJAN ◽  
M. VALANT ◽  
R. KOVACEVIC
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Arc Welding ◽  
Production Costs ◽  
Friction Stir ◽  
Dissimilar Metal ◽  
Joining Technology ◽  
Joint Properties ◽  
Dissimilar Alloys ◽  
And Performance

Friction stir welding (FSW) is an innovative solid-state material joining method invented by The Welding Institute (TWI) in 1991 and has been one of the most significant joining technology developments in the last two decades. It has evolved into a process focused on joining arc weldable (5xxx and 6xxx) and unweldable (2xxx and 7xxx) aluminum alloys to a point where it can be implemented by the aerospace and automotive industries for their joining needs.Research towards the further extension of the process to join dissimilar metal combinations like Fe-Al and Al-Cu is currently underway. A few of the important advantages of FSW over conventional joining techniques include improved joint properties and performance, low-deformation of the workpieces, a significant reduction in production costs and the freeing of skilled labor for use in other tasks. Compared to the conventional arc-welding of aluminum alloys, FSW produces a smaller heat affected zone, and it also allows the successful joining of aluminum alloys, steel, titanium, and dissimilar alloys with a stronger joint.

Effect of tool feed on mechanical properties of butt joints during friction welding with mixing of aluminum alloys

2020 ◽  
pp. 65-70
Author(s):  
A.N. Feofanov ◽  
V.V. Ovchinnikov ◽  
A.M. Gubin
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Friction Welding ◽  
Base Material ◽  
Butt Joints ◽  
Structure Defects ◽  
Friction Stir ◽  
Time Parameters

Friction stir welding of butt joints of aluminum alloys is considered. It is experimentally determined, that when temperature and time parameters are violated, defects in the form of discontinuities are localized at the boundary of the weld and the base metal, due to incompatibility of deformations of the weld metal and the adjacent base material. Keywords friction welding with stirring, aluminum alloy, mode parameters, structure, defects, strength. [email protected]

Non-removable butt joints of an aluminum-matrix composite material dispersion-hardened by particles of SiC, made by friction stir welding

2021 ◽  
pp. 64-69
Author(s):  
Keyword(s):  
Composite Material ◽  
Friction Stir Welding ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composite ◽  
Material Dispersion ◽  
Mode Structure ◽  
Butt Joints ◽  
Friction Stir ◽  
The Face ◽  
Aluminum Matrix Composite Material

Friction stir welding of butt joints of aluminum-matrix dispersion-strengthened composite materials is considered. It is shown that with an increase in the content of strengthening SiC particles, the range of welding modes that ensure the formation of a joint without defects is significantly narrowed. It was found that under cyclic loads, welded joints begin to fail from the face of the weld. Keywords: friction stir welding, aluminum matrix dispersion-hardened composite material, mode, structure, roughness, strength. [email protected]

Friction Stir Welding of the Butt Joints of Al–Mg–Si Aluminum Alloys

2021 ◽  
Vol 2021 (6) ◽  
pp. 679-684
Author(s):  
V. V. Ovchinnikov ◽  
I. A. Kurbatova ◽  
A. O. Fedorov ◽  
S. A. Romanenko
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Butt Joints ◽  
Friction Stir

Microstructural Changes Determining Joint Strength in Friction Stir Welding of Aluminium Alloys

2005 ◽  
Vol 6-8 ◽  
pp. 591-598 ◽  
Author(s):  
A. Barcellona ◽  
Gianluca Buffa ◽  
D. Contorno ◽  
Livan Fratini ◽  
D. Palmeri
Keyword(s):  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Aluminium Alloys ◽  
Joint Strength ◽  
Butt Joints ◽  
Microstructural Changes ◽  
Parent Materials ◽  
Friction Stir ◽  
Experimental Activity ◽  
Welding Processes

In the paper the results of a wide experimental activity on friction stir welding (FSW) of aluminum alloys are reported. In particular the butt joints of two different materials, namely AA1050-O and AA6082-T6 were considered. Grains dimensions and precipitates density were investigated both in the parent materials and after the welding processes. Furthermore post-welding heat treatments effects on the joint strength were studied.

Mechanical property and characterization of 7A04-T6 aluminum alloys bonded by friction stir welding

2020 ◽  
Vol 52 ◽  
pp. 263-269 ◽  
Author(s):  
Jianing Li ◽  
Molin Su ◽  
Wenjun Qi ◽  
Chen Wang ◽  
Peng Zhao ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Friction Stir Welding ◽  
Aluminum Alloys ◽  
Friction Stir
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