TY  - JOUR
AU  - Li, Qiankun
AU  - Jin, Li
AU  - Wang, Fenghua
AU  - Dong, Shuai
AU  - Zeng, Jian
AU  - Wang, Fulin
AU  - Dong, Jie
PY  - 2026
TI  - Crack propagation path deflection induced by α-Mg / LPSO interface and its effect on the fracture toughness of cast Mg-RE-Zn alloys
JO  - Journal of Magnesium and Alloys
SN  - 2213-9567
VL  - 14
IS  - C
AB  - The poor fracture toughness limits the widespread application of high-strength cast Mg-Re-Zn alloys. Regulating the alloy microstructure, with phases such as α-Mg, blocky LPSO (long-period stacking order), and lamellar LPSO, offers various possibilities to enhance ductility by casting and heat treatment. This study categorizes different interface types concerning crack initiation, propagation, and ultimate fracture toughness. It distinctly presents the results of interface modulation related to alloy composition and heat treatment, elucidating the influence on crack initiation and propagation paths. Consequently, it proposes structural configurations rule and relevant heat treatment processes that can optimize and improve alloy fracture toughness. Blocky LPSO should have appropriate dispersion and size while avoiding lamellar LPSO.
UR  - https://doi.org/10.1016/j.jma.2024.11.021
DO  - 10.1016/j.jma.2024.11.021