@article{Chen2025, 
author = {Xiang Chen and Yuhao Liu and Qiuyue Shi and Junlei Zhang and Chao He and Qi Zhao and Shuo Wang and Yifu Shen and Shuping Tan and Lifei Wang},
title = {Annealing-induced strengthening in hetero-structured Mg alloy laminates with gradient Al content},
year = {2025},
journal = {Journal of Magnesium and Alloys},
volume = {13},
number = {11},
pages = {5369-5376},
keywords = {Mg alloy laminates, Annealing strengthening, Heterostructures, Mechanical properties, Element diffusion},
url = {https://www.sciopen.com/article/10.1016/j.jma.2025.09.019},
doi = {10.1016/j.jma.2025.09.019},
abstract = {This study developed a five-layer Mg alloy laminate (pure Mg/AZ31/AZ91/AZ31/ pure Mg) through an innovative synergistic strategy involving Al-element gradient design, extrusion, and short-term annealing. Microstructural characterization revealed hierarchical heterogeneities in grain size, texture intensity, dislocation density, and precipitated phases, accompanied by the formation of annealing twinning in pure Mg layer—a phenomenon rarely documented in Mg alloys. Mechanical tests demonstrated significant strengthening effects in all annealed samples, particularly in the 300 °C/30 min annealed sample, which achieved the optimal comprehensive mechanical properties. The enhanced strength originated from the synergistic interaction among element-diffusion-induced solid solution strengthening, nanoscale β-Mg17Al12 precipitation, and hetero-deformation-induced (HDI) strengthening. This approach breaks the strength-ductility trade-off induced by traditional annealing processes, offering a new paradigm for designing high-performance Mg alloy laminates.}
}