PLC Effect at Different Types of Loading During Static Tensile Testing of Aluminium Alloys

Scientific paper - Original scientific paper

• Author: Ivan Jandrlić
• Author: Tin Brlić
• Author: Lorena Mrkobrada
• Author: Milica Vučenović
• Author's institution: University of Zagreb; Faculty of Metallurgy; (Department of Mechanical Metallurgy); (Laboratory of Deformation Metal Processing)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Metallurgy

Abstract (english)

Aluminium and aluminium alloys are indispensable materials nowadays, widely used in various constructions. It is known that some aluminium alloys, such as Al-Mg, show inhomogeneous, localized deformation phenomena at certain temperatures and strain rates. This is known in the literature as the appearance of Portevin-Le Chatelier lines, or short the PLCeffect. The Portevin-Le Chatelier effect contributes to the reduction of material ductility and leaves surface defects on the final products. The study of this phenomenon was carried out using a static tensile test and the digital image correlation method. The influence of using a constant increase of stress on the phenomenon itself was studied in comparison to the classical control of the testing machine with a constant crosshead speed. The results of the study show that the phenomenon persists regardless of the type of control and no significant changes were observed at used testing parameters. Regardless of the deformation parameters, PLC lines form throughout the whole duration of the plastic deformation until the specimen breaks.

• Keywords (english): Al-Mg alloy; DIC; PLC effect; constant stress increase
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Acta Mechanica Slovaca
• Numbering: vol. 27, no. 1, pp. 34-38
• p-ISSN: 1335-2393
• e-ISSN: 1339-3073
• DOI: https://doi.org/10.21496/ams.2023.021
• URN:NBN: urn:nbn:hr:115:098208
• Publication: 2023-03-24
• 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: Croatia; 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: Croatia; Funding stream: European Regional Development Fund
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-04-25 10:08:02