.png){kind=icon}
.png){kind=icon}
Return
Suppressing Portevin-Le Chatelier effect and enhancing mechanical properties in nanoparticles-modified high-Mg aluminum crossover alloy
.png){kind=icon}
OA
AI
Y
X
Y
J
F
J
Y
P
D
DOI：10.1080/21663831.2026.2695053.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
High Mg content in Al-Mg-Zn-Cu aluminum crossover alloys (ACA) induces severe Portevin-Le Chatelier (PLC) effects and reduces elastic modulus. In this work, introducing nanoparticles into an Al-8.5Mg-3Zn-0.81Cu-0.11Zr ACA significantly enhances strength and modulus, yielding a high-Mg aluminum crossover composite (ACC). The nanoparticles cannot only arrest mobile dislocations directly, but also refine grains and accelerate T’ precipitation to reduce the diffusing Mg solutes, which enhance the dislocation pining effect. Finally, the PLC effect of high-Mg ACA is effectively suppressed by the modified microstructures. This study provides a viable strategy for designing high-strength and low-density aluminum alloys with stable plastic flow.
Keywords:
Aluminum crossover alloy
high Mg
nanoparticles
Portevine-Le Chatelier
mechanical properties
Journal
IF:
7.9
Papers:
1.1K
Citations:
6.4K
Organization
Cited Papers