Magnesium, a material known for its high mechanical strength-to-density ratio, biocompatibility, and biodegradability, has certain limitations. Its overall mechanical strength and ductility are low, and it degrades rapidly. This project aims to address these issues by using high-pressure torsion to consolidate magnesium-based composites at room temperature. Recent findings indicate that this processing technique enhances magnesium’s mechanical strength, ductility, and corrosion resistance. Our ongoing development efforts include magnesium/aluminum composites, which offer high ductility and hardening capacity through heat treatment; magnesium/ceramic particle composites, designed to boost mechanical strength; and magnesium/hydroxyapatite composites, which could pave the way for the production of orthopedic implants with high corrosion resistance and drug release capacity.