Comparison of precipitation kinetics and mechanical properties in Zr and Sc-bearing aluminum-based alloys
Source abstract
Abstract
The study compares the precipitation kinetics of the L1 2 -structured phase, microstructure, and mechanical properties in Al-Mg-Zr and Al-Mg-Sc-Zr alloys with a close atomic concentration of dispersoid-forming elements. Continuous and discontinuous precipitation mechanisms leading to spherical nanoscale and fan-shaped precipitates are revealed in both alloys. Scandium raises the precipitation kinetics of L1 2 -structured dispersoids owing to its high diffusivity in Al. The low effect of two-stage annealing on precipitation and mechanical properties is observed in the Sc-bearing alloy compared to the Sc-free one. Due to heat treatment optimization, the Sc-free alloy exhibits higher yield strength as compared with the alloy containing both Sc and Zr. The Sc-free alloy requires a long-term two-step heat treatment to provide increased precipitates number density and high-strength values.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Microstructure and mechanical properties · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. New Al-Mg-Sc alloys10.1016/S0921-5093(99)00673-5 ↗
2. Precipitation strengthening at ambient and elevated temperatures of heat-treatable Al(Sc) alloys10.1016/S1359-6454(02)00201-X ↗
3. The effect of scandium on the microstructure, mechanical properties and weldability of a cast Al–Mg alloy10.1016/S1359-6454(02)00259-8 ↗
4. An investigation of thermal stability of structure and mechanical properties of Al-0.5Mg–Sc ultrafine-grained aluminum alloys
5. Synergetic effect of Er and Zr on the precipitation hardening of Al–Er–Zr alloy10.1016/j.scriptamat.2011.06.033 ↗
6. Effect of Zr on the microstructure, recrystallization behavior, mechanical properties and electrical conductivity of the novel Al-Er-Y-alloy10.1016/j.jallcom.2018.06.163 ↗
7. The mechanism of L12 phase precipitation, microstructure and tensile properties of Al-Mg-Er-Zr alloy10.1016/j.msea.2018.11.135 ↗
8. Temporal evolution of the nanostructure of Al(Sc, Zr) alloys: part I - chemical compositions of Al3(Sc1−xZrx) precipitates10.1016/j.actamat.2005.08.016 ↗
9. Optimization of hardening of Al–Zr–Sc casting alloys10.1007/s10853-006-0265-7 ↗
10. Precipitation behaviour of L12 Al3Zr phase in Al-Mg-Zr alloy10.1016/j.matchar.2018.02.030 ↗
11. Effects of two-step homogenization on precipitation behavior of Al3Zr dispersoids and recrystallization resistance in 7150 aluminum alloy10.1016/j.matchar.2015.02.016 ↗
12. Micro-segregation and precipitates in as-solidified Al-Sc-Zr-(Mg)-(Si)-(Cu) alloys10.1016/j.matchar.2019.06.021 ↗
13. Wetting of grain boundaries in Al by the solid Al3Mg2 phase10.1007/s10853-009-4014-6 ↗
14. Reversible “Wetting” of grain boundaries by the second solid phase in the Cu–In system10.1134/S0021364014200107 ↗
15. Contact angles by the solid-phase grain boundary wetting (coverage) in the Co–Cu system10.1007/s10853-010-4377-8 ↗
16. On the formation of fan-shaped precipitates during the decomposition of a highly supersaturated Al-Zr solid solution10.1016/0036-9748(71)90142-6 ↗
17. Ultrafine grained structures resulting from SPD-induced phase transformation in Al–Zn alloys10.1002/adem.201500151 ↗
18. Criteria for developing castable, creep-resistant aluminum-based alloys–a review10.3139/146.101249 ↗
19. Tracking the path of dislocations across ordered Al3Zr nano-precipitates in three dimensions10.1016/j.scriptamat.2013.09.014 ↗
20. Precipitation evolution in Al–Zr and Al–Zr–Ti alloys during aging at 450–600°C10.1016/j.actamat.2007.11.011 ↗