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Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure

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2016
romhanji.pdf (1.828Mb)
Authors
Romhanji, Endre
Radetić, Tamara
Popović, Miljana
Article (Published version)
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Abstract
In this study the influence of the microstructure of Al-5.1Mg-0.7Mn alloy on the propensity towards an alligatoring failure was evaluated. The morphology of the constituent particles appears to be the key factor, with dissolution and fragmentation of fibrous Mg-Si-Sr and transformation of the Al-6(Fe,Mn) into more compact shapes taking place at homogenization temperatures above 520 degrees C, contributing to improved ductility and diminished propensity towards alligatoring. Homogenization at temperatures below 500 degrees C gave rise to a non-uniform precipitation of the dispersoids. Such a microstructure favored localized slip that induced stress concentration at the grain boundaries and triggered grain boundary embrittlement.
Keywords:
Al-Mg alloy / homogenization / microstructure / localized slip / alligatoring
Source:
Materiali in Tehnologije, 2016, 50, 4, 531-536
Publisher:
  • Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia
  • Design of processing and welding of the high strength Al-Mg alloys for road and railway trasportation applications (RS-34018)

DOI: 10.17222/mit.2015.111

ISSN: 1580-2949

WoS: 000381658000011

Scopus: 2-s2.0-84983608530
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1
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3241
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Romhanji, Endre
AU  - Radetić, Tamara
AU  - Popović, Miljana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3241
AB  - In this study the influence of the microstructure of Al-5.1Mg-0.7Mn alloy on the propensity towards an alligatoring failure was evaluated. The morphology of the constituent particles appears to be the key factor, with dissolution and fragmentation of fibrous Mg-Si-Sr and transformation of the Al-6(Fe,Mn) into more compact shapes taking place at homogenization temperatures above 520 degrees C, contributing to improved ductility and diminished propensity towards alligatoring. Homogenization at temperatures below 500 degrees C gave rise to a non-uniform precipitation of the dispersoids. Such a microstructure favored localized slip that induced stress concentration at the grain boundaries and triggered grain boundary embrittlement.
PB  - Inst Za Kovinske Materiale I In Tehnologie, Ljubjana
T2  - Materiali in Tehnologije
T1  - Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure
EP  - 536
IS  - 4
SP  - 531
VL  - 50
DO  - 10.17222/mit.2015.111
ER  - 
@article{
author = "Romhanji, Endre and Radetić, Tamara and Popović, Miljana",
year = "2016",
abstract = "In this study the influence of the microstructure of Al-5.1Mg-0.7Mn alloy on the propensity towards an alligatoring failure was evaluated. The morphology of the constituent particles appears to be the key factor, with dissolution and fragmentation of fibrous Mg-Si-Sr and transformation of the Al-6(Fe,Mn) into more compact shapes taking place at homogenization temperatures above 520 degrees C, contributing to improved ductility and diminished propensity towards alligatoring. Homogenization at temperatures below 500 degrees C gave rise to a non-uniform precipitation of the dispersoids. Such a microstructure favored localized slip that induced stress concentration at the grain boundaries and triggered grain boundary embrittlement.",
publisher = "Inst Za Kovinske Materiale I In Tehnologie, Ljubjana",
journal = "Materiali in Tehnologije",
title = "Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure",
pages = "536-531",
number = "4",
volume = "50",
doi = "10.17222/mit.2015.111"
}
Romhanji, E., Radetić, T.,& Popović, M.. (2016). Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure. in Materiali in Tehnologije
Inst Za Kovinske Materiale I In Tehnologie, Ljubjana., 50(4), 531-536.
https://doi.org/10.17222/mit.2015.111
Romhanji E, Radetić T, Popović M. Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure. in Materiali in Tehnologije. 2016;50(4):531-536.
doi:10.17222/mit.2015.111 .
Romhanji, Endre, Radetić, Tamara, Popović, Miljana, "Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure" in Materiali in Tehnologije, 50, no. 4 (2016):531-536,
https://doi.org/10.17222/mit.2015.111 . .

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