The influence of welding current pulses shape on aluminum alloy joints properties

Keywords

pulse-arc welding, fusible electrode, current pulse shape, aluminum alloys, welded joints, thermal impact zone, microstructure, hardness distribution, mechanical properties.

Cite as

Zhernosekov А. М., Fedorchuk V. Ye., Kysla H. P., Koval V. А., and Falchenko Iu. V. The influence of welding current pulses shape on aluminum alloy joints properties. Physico­chemical Mechanics of Materials. 2022. 58(2), 012-019.

Abstract

The influence of the parameters of pulsed-arc power sources in fusible elect­rode welding on the specific features of formation of the structure and properties of welded joints of various aluminium alloys is studied. Comparative tests of selected power sources were carried out and welded joints of aluminium alloys were produced using optimum wel­ding modes. Metallographic investigations were performed and peculiarities of alu­mi­nium alloy softening in the heat-affected zone under the impact of welding arc heat were studied. Advantages of application of power sources with a controlled current shape for a weld formation, its structure and mechanical properties of welded joints, are shown.

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