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Homogenization of an al-mg alloy and alligatoring failure: alloy ductility and fracture

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Authors
Romhanji, Endre
Radetić, Tamara
Popović, Miljana
article (publishedVersion)
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Abstract
High-strength Al-Mg alloys have a propensity toward hot fracture and failure by alligatoring during hot rolling. In this study the effect of homogenization conditions on the susceptibility of an Al-5.1Mg-0.7Mn alloy toward alligatoring was investigated. It was found that the plates homogenized in a temperature range of 460-520 degrees C were prone toward alligatoring, but once homogenized at 550 degrees C they were not prone toward it any longer. The characterization of the fracture showed a predominance of the intergranular ductile fracture, but the type of the constitutive particles filling the voids changed with the homogenization regime. Grain decohesion and grain-boundary embrittlement show that certain thermal treatments resulted in a microstructure that promoted slip localization.
Keywords:
Al-Mg alloy / thermo-mechanical processing / hot working / ductility / embrittlement
Source:
Materiali in Tehnologije, 2016, 50, 3, 403-407
Publisher:
  • Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia
  • info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/34018/RS// (RS-34018)

DOI: 10.17222/mit.2015.110

ISSN: 1580-2949

WoS: 000385008500018

Scopus: 2-s2.0-84975037776
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URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3365
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  • Radovi istraživača / Researchers’ publications (TMF)
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Tehnološko-metalurški fakultet

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