Two sets of alloys, Mg-Zn-Ca-xNi (0 ≤ x ≤ 5), have been developed with tunable corrosion and mechanical properties, optimized for fracturing materials. High-zinc artificial aged (T6) Mg-12Zn-0.5Ca-xNi (0 ≤ x ≤ 5) series, featuring a straightforward preparation method and the potential for manufacturing large-scale components, exhibit notable corrosion rates up to 29 mg cm⁻² h⁻¹ at 25 °C and 643 mg cm⁻² h⁻¹ at 93 °C. The high corrosion rate is primary due to the Ni–containing second phases, which intensify the galvanic corrosion that overwhelms their corrosion barrier effect. Low-zinc rolled Mg-1.5Zn-0.2Ca-xNi (0 ≤ x ≤ 5) series, characterizing excellent deformability with an elongation to failure of ∼26 %, present accelerated corrosion rates up to 34 mg cm⁻² h⁻¹ at 25 °C and 942 mg cm⁻² h⁻¹ at 93 °C. The elimination of corrosion barrier effect via deformation contributes to the further increase of corrosion rate compared to the T6 series. Additionally, Mg-Zn-Ca-xNi (0 ≤ x ≤ 5) alloys exhibit tunable ultimate tensile strengths ranging from ∼190 to ∼237 MPa, depending on their specific composition. The adjustable corrosion rate and mechanical properties render the Mg-Zn-Ca-xNi (0 ≤ x ≤ 5) alloys suitable for fracturing materials.

Rolled Mg-Al-Sn series alloys generally possess limited formability due to the formation of strong basal texture. Texture weakening is an effective way to enhance formability, but usually accompanied with decreasing strength. In this work, synergistic enhancement of strength and formability is achieved in a Mg-3Al-1Sn-0.5Ca-0.1Sm (ATXS3110) alloy by 0.2 wt.% Mn addition combined with high temperature rolling, exhibiting a high index Erichsen (I.E.) value of ∼8.1 mm and near-isotropic mechanical properties. On one hand, after Mn addition, the grain refinement from ∼7.6 µm to ∼4.1 µm results in suppression of extension twinning, thereby preventing the development of strong basal texture upon stretch forming. On the other hand, trace Mn addition narrows the grain size distribution and promotes the formation of uniform fine grains, which induces homogeneous deformation during stretch forming. Moreover, grain refinement and high-density nano-sized precipitates caused by trace Mn addition increase the strength. This work may provide insights into designing low-cost Mg-Al-Sn series alloys with superior comprehensive mechanical properties for further structural applications.