Abstract Transformation-induced plasticity in CuZr-based bulk metallic glass (BMG) composites opens up a new perspective for the design of ductile BMG composites. In this work, rapid and partial crystallization of BMGs is proposed to tailor microstructures of ductile BMG composites. During the early crystallization stage, the precipitation of B2 CuZr crystals in the Cu42Zr42Al10Co6 BMGs is growth-controlled at low or high heating rates after having passed through a nucleation-dominated temperature region. Abundant nucleation is beneficial for the uniform precipitation of B2 crystals in the glassy matrix. Compared with annealing processes at slow heating, the degree of the free volume annihilation could be reduced to some content by employing a high heating rate. The microstructures of CuZr-based BMG composites can be effectively tuned by changing rapid annealing parameters, which enhances the ductility of the resulting BMG composites. This approach proves to be efficient for the development of ductile metastable alloys and composites.

中文翻译：

---

快速和部分结晶以设计可延展的 CuZr 基块状金属玻璃复合材料

摘要 CuZr 基块体金属玻璃 (BMG) 复合材料的相变诱导塑性为韧性 BMG 复合材料的设计开辟了新的视角。在这项工作中，提出了 BMG 的快速和部分结晶来定制韧性 BMG 复合材料的微观结构。在早期结晶阶段，在通过成核主导温度区域后，Cu42Zr42Al10Co6 BMG 中 B2 CuZr 晶体的沉淀在低或高加热速率下受到生长控制。大量的成核有利于 B2 晶体在玻璃基体中的均匀沉淀。与缓慢加热的退火工艺相比，采用高加热速率可以将自由体积湮灭程度降低到一定程度。CuZr基BMG复合材料的微观结构可以通过改变快速退火参数来有效调整，从而提高所得BMG复合材料的延展性。事实证明，这种方法对于开发可延展的亚稳态合金和复合材料是有效的。