Phase equilibria and crystal structure of ternary compounds in Al-rich corner of Al-Er-Y system at 673 and 873K

Liu, Xiaoxu; Du, Yong; Liu, Shuhong; Cheng, Kaiming

doi:10.1016/j.jmst.2020.04.047

Cited by 7 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…В работе [35] показано существенное влияние отжига перед деформацией на механические свойства и электропроводность нового сплава Al-0,2Y-0,2Sc-0,3Er. Отжиг слитка, горячая и холодная прокатки с последующим отжигом обеспечивают следующее сочетание свойств: σ 0,2 = = 191 МПа, σ в = 207 МПа, δ = 14 % и IACS -59,7 %.…”

Section: Introductionunclassified

Mechanical properties and electrical conductivity of Al–Y–Sс–Er cold worked alloy

Gorlov

Главатских

Barkov

et al. 2023

Izv.VUZ. Tsvet. Met.

View full text Add to dashboard Cite

Aluminum alloys alloyed with rare earth and transition metal are promising materials for electric energy transportation due to their high properties of strength, thermal stability, and electrical conductivity. The features of strengthening, their mechanical properties and electrical conductivity of Al–0.2Y–0.2Sc–0.3Er alloy after cold rolling have been established. The alloy as a cast structure is presented by aluminum solid solution (Al) and dispersed eutectics with τ2 (Al75-76Er11-17Y7-14) phase upon complete dissolution of scandium in (Al), and a content of yttrium and erbium at the level of 0.2–0.3 % each. Cold rolling the ingot accelerates strengthening upon annealing at 270 and 300 °C, reducing the time of achieving peak hardness. The maximum strengthening due to precipitation of L12 dispersoid of Al3(Sc,Y,Er) phase with the average particle size up to 10 nm is achieved after 7 h of annealing at 300 °C after cold rolling. This shows the prevailing heterogeneous mechanism of nucleation due to defects accumulated during cold rolling which stimulates strengthening. The eutectic particles are located mainly along the boundaries, elongated in the rolling direction. Irrespective of the mode of sheet fabrication, the alloy demonstrates high thermal stability up to 400 °C. During annealing of the sheets to 450 °C, their non-recrystallized structure is retained. Ingot annealing at t = 300 °C in 7 h and cold rolling with subsequent annealing under the same conditions provide a high level of mechanical properties and electrical conductivity: σ0.2 = 194 MPa, σu = 210 MPa, δ = 12.1 % and IACS – 60,1 %. The alloy has demonstrated high yield stress up to 100 h of annealing at t = 300 °C.

show abstract

Section: Introductionunclassified