The application of bulk metallic glasses (BMGs) has been traditionally limited to parts with small dimensions and simple geometries, due to the requirement of fast cooling during the conventional process of casting. This research exemplifies a promising additive manufacturing method, i.e., laser-foil-printing (LFP), to fabricate high-quality BMG parts with large dimensions and complex geometries. In this study, Zr_52.5Ti₅Al₁₀Ni_14.6Cu_17.9 BMG parts were fabricated by LFP technology in which MG foils are laser welded layer-by-layer upon a substrate. The mechanical properties of the fabricated BMG parts were measured using micro-indentation, tensile test and four-point bending test, and compared to as-cast BMG parts. Through LFP, as rapid cooling rates can be achieved, fully amorphous and nearly fully dense BMG parts without cracking have been successfully made. The glass transition temperature, crystallization temperature, and melting temperature of the fabricated parts are nearly the same as those of the as-cast parts. Additionally, the fabricated BMG parts exhibit mechanical properties, including micro-hardness, tensile strength, and flexural strength, comparable to the as-cast BMG parts.

传统上，由于在常规铸造过程中需要快速冷却，大块金属玻璃（BMG）的应用一直限于尺寸小和几何形状简单的零件。这项研究例证了一种有前途的增材制造方法，即激光箔印刷（LFP），以制造具有大尺寸和复杂几何形状的高质量BMG零件。在这项研究中，Zr _52.5 Ti ₅ Al ₁₀ Ni _14.6 Cu _17.9BMG零件是通过LFP技术制造的，其中MG箔层一层一层地激光焊接在基板上。使用微压痕，拉伸试验和四点弯曲试验测量了所制造的BMG零件的机械性能，并与铸造的BMG零件进行了比较。通过LFP，由于可以实现快速的冷却速度，因此成功地制造了完全无定形且几乎完全致密的BMG零件，而没有开裂。所制造的部件的玻璃化转变温度，结晶温度和熔融温度与铸件的几乎相同。此外，所制造的BMG零件具有与铸造BMG零件相当的机械性能，包括显微硬度，抗张强度和弯曲强度。