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2 International Journal of Applied Mechanics and Engineering

2 2022

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Joining of carbon steel AISI 1006 to aluminum alloy AA6061-T6 via friction spot joining technique

Ridha Munaf Hashim, Saad Mursal Luaibi, Abdullah Isam Tareq, Barrak Osamah Sabah, Hussein Sabah Khammass, Hussein Abbas Khammas

International Journal of Applied Mechanics and Engineering

2022

Vol. 27, no. 4

1--12

This work aims to join sheets of carbon steel to aluminum alloy AA6061. A lap joint arrangement was used with a joint lap area of dimensions *25 25 mm . The joining procedure was carried out using a rotating tool of 10 mm shoulder diameter. Three process parameters, with three levels for each parameter, were selected to investigate their effects on joints quality. The parameter’s levels for each experiment were designed using the design of the experiment method (DOE). The results indicated that the two materials were joined by a mechanical interlock at an interface line, without formation of intermetallic compounds. The shear force of the joint reached an ultimate value of .4 82kN . The shear force of the joint improved by increasing plunging depth of the tool. Samples of minimum shear force value failed by a pull-outing aluminum metal from the carbon steel specimen. Samples of higher shear force value exhibited a shear mode of fracture. Increasing the rotating speed and decreasing pre-heating increased the process temperature.

Influence of welding parameters of resistance spot welding on joining aluminum with copper

Sar Mohammed Helan, Ridha Munaf Hashim, Husain Imad M., Barrak Osamah Sabah, Hussein Sabah Khammass

International Journal of Applied Mechanics and Engineering

2022

Vol. 27, no. 2

217--225

The resistance spot welding (RSW) method was used to join aluminum alloy AA 1050 and copper alloy UNS C50100 sheets. Mechanical properties of the joints were examined. The influence of welding process parameters on tensile shear force of the joints was discussed. The design of experiments (DOE) method was used to analyze the influence of welding parameters on the mechanical properties of the joints. Three RSW parameters were used: welding current, squeeze time, and welding time. The results showed that the joint shear stress increased with increasing the welding current until a value of 12000 Amp. Then the shear stress decreased. The tensile shear stress increased with increasing the welding and squeeze time. As a consequence, it can be possible to weld copper with aluminum by RSW.