Tensile behaviour of mig welded hydrogenated Al-alloy EN AW-5083 (CROSBI ID 586443)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Dolić, Natalija ; Malina, Jadranka ; Kožuh, Zoran ; Garašić, Ivica ; Tunić Jozef
engleski
Tensile behaviour of mig welded hydrogenated Al-alloy EN AW-5083
In this paper the influence of hydrogenation on mechanical properties and microstructure of MIG double-side welded EN AW-5083 aluminium alloy was investigated. According to the results obtained from tensile tests, there was no significant difference in yield and tensile strength between uncharged and H-charged weld, but elongation and contraction were decreased in the hydrogenated specimen. Such tensile behaviour suggests that hydrogen was absorbed in amount high enough to cause the embrittlement of welded joints, which is confirmed by embrittlement index IHE = 20.9%. Detachment between base metal and weld started at the weld-root and afterwards the main crack continues spreading along the fusion line characterized by as-cast microstructure with fine equiaxed columnar grains. A great number of grain boundaries could be considered as H-traps and the sites from where initial microcracks start.
MIG zavarivanje; elektrokemijsko navodičenje; mehanička svojstva; mikrostruktura; lijevana alumnijska legura EN AW-5083
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Podaci o prilogu
687-696.
2012.
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objavljeno
978-953-7518-02-8
Podaci o matičnoj publikaciji
8. Europsko savjetovanje Eurojoin 8 : zbornik radova = 8th European Conference : proceedings
Kožuh, Zoran
Zagreb: Hrvatsko društvo za tehniku zavarivanja
Podaci o skupu
European Conference on Welding, Joining and Cutting (8 ; 2012)
poster
24.05.2012-26.05.2012
Pula, Hrvatska