scholarly journals Hot-wire Laser Brazing Technology for Steel / Aluminum Alloy Dissimilar Joint

2017 ◽  
Vol 35 (2) ◽  
pp. 155s-159s ◽  
Author(s):  
Shunsuke TAKAYA ◽  
Motomichi YAMAMOTO ◽  
Kenji SHINOZAKI ◽  
Hiroshi MATSUDA ◽  
Rinsei IKEDA
Keyword(s):  
Aluminum Alloy ◽  
Dissimilar Joint ◽  
Hot Wire ◽  
Laser Brazing

scholarly journals Microstructure of Dissimilar Joint Interface of Magnesium Alloy and Aluminum Alloy by Friction Stir Welding

2003 ◽  
Vol 21 (4) ◽  
pp. 539-545 ◽  
Author(s):  
Satoshi HIRANO ◽  
Kazutaka OKAMOTO ◽  
Masayuki DOI ◽  
Hisanori OKAMURA ◽  
Masahisa INAGAKI ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Welding ◽  
Magnesium Alloy ◽  
Dissimilar Joint ◽  
Joint Interface ◽  
Friction Stir

scholarly journals Weld Formation in Laser Hot-Wire Welding of 7075 Aluminum Alloy

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 909 ◽  
Author(s):  
Shichun Li ◽  
Wei Xu ◽  
Gang Xiao ◽  
Bing Chen
Keyword(s):  
Aluminum Alloy ◽  
Base Metal ◽  
Heat Affected Zone ◽  
Weld Zone ◽  
Welding Process ◽  
Tensile Fracture ◽  
Hot Wire ◽  
Columnar Crystal ◽  
Weld Formation ◽  
Hot Wire Welding

The laser hot-wire welding process was adopted to weld 7075 high-strength aluminum alloy. The influence laws of parameters on the weld formation were analyzed during laser hot-wire welding, and the microstructure characteristics and mechanical properties of welds were analyzed. The results showed that the parameters whose significance of influence on weld formation as ranked from high to low were laser power, current, gap width, welding speed and wire feeding rate. With the increase of wire temperature, the weld formation quality became better initially and then worse. Under the condition of optimized parameters, good weld formation could be obtained. The weld zone had a fine grain microstructure, and was in casting state consisted of dendritic crystal and equiaxed crystal. The heat affected zone mainly consisted of columnar crystal. The microhardness decreased gradually from base metal to heat affected zone then to weld zone. The tensile fracture of weld specimen occurred at the weld zone, and was in the ductile fracture state. The tensile strength of weld joint was 206 MPa and was 64.2% of base metal strength.

Research on Laser Brazing Applying Al-Based Amorphous Ribbon

2016 ◽  
Vol 849 ◽  
pp. 95-99
Author(s):  
Jing Hui Song
Keyword(s):  
Aluminum Alloy ◽  
Melt Spinning ◽  
Amorphous Ribbon ◽  
Amorphous Structure ◽  
X Ray Diffraction ◽  
Laser Brazing ◽  
Matrix Metal ◽  
Binding Effect ◽  
Hardness Tester ◽  
The Matrix

The Al-based amorphous ribbons were prepared by the copper roller melt spinning method, and then the laser brazing was carried out between aluminum alloy and aluminum alloy. Subsequently, the Micro Vickers Hardness Tester, Metallographic Microscope, Scanning Electron Microscopy (SEM) and X-ray Diffraction (XRD) were used to characterize the hardness, morphology, micro structure and composition distribution of the welded joints respectively, so as to analyze the structural characteristic, performance characteristic and binding effect of the matrix metal joints. The results indicate that the prepared Al-based amorphous ribbon is of amorphous structure, the soldering point between aluminum alloy and aluminum alloy is well-connected and the joint’s hardness is identical to that of the base metal. The connection between the metal sheets can be achieved by using Al-based amorphous ribbon as solder, which could provide concrete references for the development and application of amorphous brazing in various fields.

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