Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content
Abstract
Slow strain rate testing (SSRT) was used to study the effect of the microstructure on the stress corrosion cracking (SCC) susceptibility of Al-Mg alloy sheet containing 6.8 wt.% Mg. In the cold-rolled and fully annealed conditions, high SCC susceptibility was experienced. In those cases the ductility was strongly affected by the presence of corrosive environment (for hard temper: El(air) = 13.6%, El(SCC) = 0.6%; for annealed condition: El(air), = 24.1-25.3%, El(SCC) = 3.2-4.2%) and the elongation loss was great, E-loss = 81.7-95.6%. It is supposed that the high SCC susceptibility results from a continuous network of the P-phase (Mg5Al8) precipitate at grain boundaries for the annealed temper, and heavy precipitation of P-phase along the planes of localized deformation for the hard temper. High SCC resistance attained after thermal exposure at the temperature range 225-285 degreesC (stabilized condition). The ductility was almost unaffected by the presence of corrosive environment (El(a...ir), = 12.8-23.2%, El(SCC) = 12.8-22%) and the elongation loss was small, E-loss lt 7%. High SCC resistance was related to the stabilized structure, which causes discontinuous P-phase (Mg5Al8) precipitation in a globular form, uniformly distributed throughout the structure.
Keywords:
Al-Mg alloy / stress corrosion cracking (SCC) / slow strain rate testing (SSRT)Source:
Journal of Materials Processing Technology, 2002, 125, 275-280Publisher:
- Elsevier Science Sa, Lausanne
DOI: 10.1016/S0924-0136(02)00398-9
ISSN: 0924-0136
WoS: 000178405200037
Scopus: 2-s2.0-15344351296
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Popović, Miljana AU - Romhanji, Endre PY - 2002 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/455 AB - Slow strain rate testing (SSRT) was used to study the effect of the microstructure on the stress corrosion cracking (SCC) susceptibility of Al-Mg alloy sheet containing 6.8 wt.% Mg. In the cold-rolled and fully annealed conditions, high SCC susceptibility was experienced. In those cases the ductility was strongly affected by the presence of corrosive environment (for hard temper: El(air) = 13.6%, El(SCC) = 0.6%; for annealed condition: El(air), = 24.1-25.3%, El(SCC) = 3.2-4.2%) and the elongation loss was great, E-loss = 81.7-95.6%. It is supposed that the high SCC susceptibility results from a continuous network of the P-phase (Mg5Al8) precipitate at grain boundaries for the annealed temper, and heavy precipitation of P-phase along the planes of localized deformation for the hard temper. High SCC resistance attained after thermal exposure at the temperature range 225-285 degreesC (stabilized condition). The ductility was almost unaffected by the presence of corrosive environment (El(air), = 12.8-23.2%, El(SCC) = 12.8-22%) and the elongation loss was small, E-loss lt 7%. High SCC resistance was related to the stabilized structure, which causes discontinuous P-phase (Mg5Al8) precipitation in a globular form, uniformly distributed throughout the structure. PB - Elsevier Science Sa, Lausanne T2 - Journal of Materials Processing Technology T1 - Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content EP - 280 SP - 275 VL - 125 DO - 10.1016/S0924-0136(02)00398-9 ER -
@article{ author = "Popović, Miljana and Romhanji, Endre", year = "2002", abstract = "Slow strain rate testing (SSRT) was used to study the effect of the microstructure on the stress corrosion cracking (SCC) susceptibility of Al-Mg alloy sheet containing 6.8 wt.% Mg. In the cold-rolled and fully annealed conditions, high SCC susceptibility was experienced. In those cases the ductility was strongly affected by the presence of corrosive environment (for hard temper: El(air) = 13.6%, El(SCC) = 0.6%; for annealed condition: El(air), = 24.1-25.3%, El(SCC) = 3.2-4.2%) and the elongation loss was great, E-loss = 81.7-95.6%. It is supposed that the high SCC susceptibility results from a continuous network of the P-phase (Mg5Al8) precipitate at grain boundaries for the annealed temper, and heavy precipitation of P-phase along the planes of localized deformation for the hard temper. High SCC resistance attained after thermal exposure at the temperature range 225-285 degreesC (stabilized condition). The ductility was almost unaffected by the presence of corrosive environment (El(air), = 12.8-23.2%, El(SCC) = 12.8-22%) and the elongation loss was small, E-loss lt 7%. High SCC resistance was related to the stabilized structure, which causes discontinuous P-phase (Mg5Al8) precipitation in a globular form, uniformly distributed throughout the structure.", publisher = "Elsevier Science Sa, Lausanne", journal = "Journal of Materials Processing Technology", title = "Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content", pages = "280-275", volume = "125", doi = "10.1016/S0924-0136(02)00398-9" }
Popović, M.,& Romhanji, E.. (2002). Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content. in Journal of Materials Processing Technology Elsevier Science Sa, Lausanne., 125, 275-280. https://doi.org/10.1016/S0924-0136(02)00398-9
Popović M, Romhanji E. Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content. in Journal of Materials Processing Technology. 2002;125:275-280. doi:10.1016/S0924-0136(02)00398-9 .
Popović, Miljana, Romhanji, Endre, "Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content" in Journal of Materials Processing Technology, 125 (2002):275-280, https://doi.org/10.1016/S0924-0136(02)00398-9 . .