Monolithic bulk metallic glass and glass matrix composites with a relative density above 98 % were produced by processing Cu₄₆Zr₄₆Al₈ (at.%) via selective laser melting (SLM). Their microstructures and mechanical properties were systematically examined. B2 CuZr nanocrystals (30–100 nm in diameter) are uniformly dispersed in the glassy matrix when SLM is conducted at an intermediate energy input. These B2 CuZr nanocrystals nucleate the oxygen-stabilized big cube phase during a remelting step. The presence of these nanocrystals increases the structural heterogeneity as indirectly revealed by mircrohardness and nanoindentation measurements. The corresponding maps in combination with calorimetric data indicate that the glassy phase is altered by the processing conditions. Despite the formation of crystals and a high overall free volume content, all additively manufactured samples fail at lower stress than the as-cast glass and without any plastic strain. The inherent brittleness is attributed to the presence of relatively large pores and the increased oxygen content after selective laser melting.

通过处理Cu ₄₆ Zr ₄₆ Al ₈制备相对密度大于98％的整体块状金属玻璃和玻璃基复合材料（at。％）通过选择性激光熔化（SLM）。系统地检查了它们的微观结构和力学性能。当以中等能量输入进行SLM时，B2 CuZr纳米晶体（直径为30-100 nm）均匀地分散在玻璃状基质中。这些B2 CuZr纳米晶体在重熔步骤中成核了氧稳定的大立方体相。这些纳米晶体的存在增加了结构异质性，如通过显微硬度和纳米压痕测量间接显示的。相应的图与量热数据相结合，表明玻璃相因加工条件而改变。尽管形成了晶体并且总的自由体积含量很高，但所有添加制造的样品都比铸态玻璃的应力低，并且没有任何塑性应变。