Effects of welding parameters on microstructures and mechanical properties of disk laser beam welded 2A14-T6 aluminum alloy joint

2018 ◽  
Vol 31 ◽  
pp. 240-246 ◽  
Author(s):  
Lei Wang ◽  
Yanhong Wei ◽  
Wenyong Zhao ◽  
Xiaohong Zhan ◽  
Lvbo She
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Laser Beam ◽  
Welding Parameters ◽  
Disk Laser ◽  
Microstructures And Mechanical Properties

scholarly journals Microstructural Characterization and Mechanical Properties of Laser Beam-Welded Dissimilar Joints between A6000 Aluminum Alloy and Galvanized Steel

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 543
Author(s):  
Nkopane Angelina Ramaphoko ◽  
Samuel Skhosane ◽  
Nthabiseng Maledi
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Laser Beam ◽  
Laser Welding ◽  
Heat Input ◽  
Welding Process ◽  
Galvanized Steel ◽  
Vehicle Body ◽  
Welding Parameters ◽  
Dissimilar Joints

This paper presents the laser beam welding process of a lap joint between galvanized steel (Z225) and an aluminum alloy (A6000) from an IPG fiber laser. Welding of steel to aluminum has become popular in the automotive industry as a means of reducing the total vehicle body mass. This approach reduces fuel consumption and, ultimately, carbon emissions. Laser welding parameters used to control heat input for the study were laser power ranging between 800 and 1200 W, as well as laser welding speeds between 2 and 4 m/min. Distinct features of the dissimilar joints were microscopically examined. The SEM-EDS technique was employed to study the intermetallic phases along the Fe-Al interface. The outcome revealed the presence of “needle-like phases” and “island-shaped phases” at high heat inputs. Traces of both Fe2Al5 and FeAl3 phases were detected. For low heat input, there was evidence of insufficient fusion. Weld width was influenced by welding parameters and increased with an increase in heat input. Mechanical properties of the joints indicated that the microhardness values of the weld joints were higher than those of both base metals. The maximum tensile shear strength obtained was 1.79 kN for a sample produced at 1200 W and 3 m/min.

Joining of Aluminium Structures with Aluminium Foams

1998 ◽  
Vol 521 ◽  
Author(s):  
J. Burzer ◽  
T. Bernard ◽  
H. W. Bergmann
Keyword(s):  
Mechanical Properties ◽  
Laser Beam ◽  
Tensile Test ◽  
Laser Beam Welding ◽  
Welding Parameters ◽  
Transportation Industry ◽  
Absorption Properties ◽  
Testing Method ◽  
New Construction ◽  
Joining Process

ABSTRACTThe aim of this work is the evaluation of new construction elements for applications in transportation industry which are based on new designs incorporating commonly applied aluminium structures and aluminium foams. The work includes the characterisation of the joining process, the joining mechanism and the mechanical properties of the joining zone. A testing method for the joints is developed which is based on a common tensile test in order to evaluate the influence of the main laser welding parameters on the toughness of the joints and to afford a comparison between laser beam welding and gluing process. The analysis of the joining mechanism is investigated with the help of metallographic studies. In addition, the energy absorption properties of aluminium hollows filled and joined with foam structures are characterised.

Study on Microstructures and Mechanical Properties of Rheo-Die Casting Semi-Solid A356 Aluminum Alloy

2006 ◽  
Vol 116-117 ◽  
pp. 453-456 ◽  
Author(s):  
Yong Lin Kang ◽  
Yue Xu ◽  
Zhao Hui Wang
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Die Casting ◽  
A356 Alloy ◽  
Experimental Results ◽  
A356 Aluminum Alloy ◽  
Microstructures And Mechanical Properties ◽  
A356 Aluminum ◽  
Semi Solid

In this paper, with a newly self-developed rotating barrel rheomoulding machine(RBRM), microstructures and mechanical properties of rheo-die casting A356 alloy were studied. In order to clearly show the characteristic of rheo-die casting, liquid die casting and semi-solid casting were done too. The experimental results showed that microstructures of rheo-die casting were composed of solid grains, which were finer and rounder, and had fewer pores. In the three technologies, integrated mechanical properties of semi-solid rheo-die casting were the best.

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