Home FOR AUTHORS Kovove Materialy-Metallic Materials 2016 Metallic Materials Vol. 54 (2016), no. 5, pp.345-350

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Metallic Materials Vol. 54 (2016), no. 5, pp.345-350

Title: The effect of continuous and pulsed current on microstructure and mechanical properties in TIG welding of Al-Si alloy sheets

Abstract: In this experimental study, Al-Si alloy sheets were joined through TIG welding method by using continuous current and pulsed current. Tensile test, bending test, hardness test, and microstructure examination of joined test samples were carried out in order to see the effect of current type on mechanical properties of welded samples. Experimental results showed that pulsed current led to low heat input, grain refinement, and hardness increase in weld metal compared to alternative current. The samples joined by using the pulsed current showed higher tensile strength than the samples welded by using the alternative current. After bending test, cracks, tearing, and surface defection were not observed in the samples.

Keywords: aluminium, TIG welding, current type, mechanical properties
Published online: 12-Oct-2016
Year: 2016, Volume: 54, Issue: 5 Page From: 345, Page To: 350

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