Magnesium (Mg) alloy shows great potential as bone implant owing to its favourable biocompatibility and degradability. In the present work, bioglass-reinforced Mg-based composite was manufactured via laser additive manufacturing. The results showed that too low a volumetric energy density (E_v ) resulted in the appearance of open pores on the surface, which significantly deteriorated the densification behaviour. In contrast, too high an E_v caused the occurrence of the‘balling phenomenon’ with discontinuous surface, because of the excessive liquid formation and extended pool lifetime. Under a proper E_v of 185.19 J/mm³, favourable part with high densification rate was obtained. Meanwhile, the refined grains together with orderly dispersed reinforcing particles contributed to the enhanced mechanical properties. Significantly, the incorporated bioglass promoted the apatite deposition on Mg matrix, which served as an effective protection layer and reduced the degradation rate. Furthermore, it also improved the cell growth and differentiation, showing great potential in clinical bone repair.

镁（Mg）合金由于其良好的生物相容性和可降解性而具有巨大的骨植入潜力。在当前的工作中，通过激光增材制造技术制造了生物玻璃增强的镁基复合材料。结果表明，太低的体积能量密度（E _v ）导致在表面上出现开孔，这显着恶化了致密化行为。相反，E _v 太高会导致形成不连续表面的“起球现象”，这是因为过多的液体形成和延长的池寿命。在适当的E _v 为185.19 J / mm ^{3的情况下}，得到具有高致密化率的有利部分。同时，精制的晶粒与有序分散的增强颗粒一起有助于增强机械性能。值得注意的是，掺入的生物玻璃促进了磷灰石在Mg基质上的沉积，这是有效的保护层并降低了降解速率。此外，它还改善了细胞的生长和分化，在临床骨修复中显示出巨大的潜力。