Homogenization of an al-mg alloy and alligatoring failure: influence of the microstructure
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 / alligatoringSource:
Materiali in Tehnologije, 2016, 50, 4, 531-536Publisher:
- 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
Institution/Community
Tehnološko-metalurški fakultetTY - 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 . .