[Kovove materialy - Metallic materials]
    Sun - October 01, 2023 - 14:47 No. of hits : 1482583 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 54 (2016), Issue 5

The effect of continuous and pulsed current on microstructure and mechanical properties in TIG welding of Al-Si alloy sheets
vol. 54 (2016), no. 5, pp. 345 - 350
DOI: 10.4149/km_2016_5_345

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.

Key words
aluminium, TIG welding, current type, mechanical properties

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

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