Influence of homogenization on chemical properties of aluminum alloy EN AW-5083

Scientific paper - Original scientific paper

• Author: Natalija Dolić
• Author: Zdenka Zovko Brodarac
• Author: Franjo Kozina
• Editor: Miroslav Sokić
• Editor: Branislav Marković
• Editor: Vaso Manojlović
• Author's institution: University of Zagreb; Faculty of Metallurgy; (Department of Process Metallurgy); (Laboratory of Iron, Steel and Founding)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy; Process Metallurgy

Abstract (english)

The aim of this paper is to estimate the chemical composition homogeneity of six aluminum EN AW-5083 alloy slabs
produced by the Direct Chill Process in as-cast and homogenized condition. The homogeneity assessment is based on the
content of magnesium (Mg) as a main alloying element.
The experimental part of this work is based on the analysis of Mg content on previously defined positions within the
cross-sectioned plates taken from the slabs’ fronts and rears. The determination of chemical composition homogeneity
was based on the Latin square experiment design. The statistical processing enabled the determination of the difference
in the cross-section of each individual plate. The chemical homogeneity of the slabs as a whole was evaluated by
comparing the results from the slabs’ fronts and rears. The significance and influence of homogenization on the
magnesium content was quantified by comparison of the obtained measurement results for the as-cast and homogenized
state of the tested EN AW-5083 alloy.
The obtained results indicate that the Mg content of all melts and all average values of magnesium content in as-cast and
homogenized state per individual charges are within the values prescribed by the norm. A small deviation in the
magnesium content was detected in the first three tested alloys in the homogenized state (3112, 3113, 3114) as well as
decrease in Mg content from the melt to as-cast and homogenized slabs due to oxidation loss. The average value of Mg
loss for all six charges is: during casting from the amount of Mg in the melt to the cast slab 0.18 %, additional Mg loss of
0.14 % during the homogenization, while the average total loss of magnesium is 0.32 %.

• Keywords (english): aluminium alloy EN AW-5083; chemical composition homogeneity; content of magnesium; Direct Chill Process
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Publication title: Congress proceedings - MME SEE 2023 5th Metallurgical & Materials Engineering Congress of South-East Europe
• Numbering: pp. 204-209
• ISBN: 978-86-87183-32-2
• URN:NBN: urn:nbn:hr:115:355367
• Publication: 2023
• Project: Number: KK.01.1.1.02.0020; Title (croatian): Centar za ljevarstvo - SIMET; Title (english): Center for casting - SIMET; Acronym: SIMET; Leader: Zdenka Zovko Brodarac; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Project: Number: KK.01.1.1.02.0022; Title (croatian): Virtulab – Integrirani laboratorij za primarne i sekundarne sirovine; Acronym: Virtulab; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Conference: Title: 5th Metallurgical & Materials Engineering Congress of South-East Europe; Acronym: MME SEE 2023; Location: Trebinje, Bosnia and Herzegovina; Organizer: The Association of Metallurgical Engineers of Serbia; Start date: 2023-06-07; End date: 2023-06-10; Assembly type: Lecture
• Type of resource: Text
• Publisher: Association of Metallurgical Engineers of Serbia (AMES)
• Publishing place: Srbija
• Access conditions: Open access
• Created on: 2024-05-02 09:18:12