B2-CuZr reinforced amorphous alloy matrix composites: A review

B2-CuZr phase reinforced amorphous alloy matrix composites has become one of the research hotspots in the field of materials science due to the “transformation-induced plasticity” phenomenon, which makes the composites show better macroscopic plastic deformability and obvious work-hardening behavior compared to the conventional amorphous alloy matrix composites reinforced with ductile phases. However, the in-situ metastable B2-CuZr phase tends to undergo eutectoid decomposition during solidification, and the volume fraction, size, and distribution of B2-CuZr phase are difficult to control, which limits the development and application of these materials. To date, much efforts have been made to solve the above problems through composition optimization, casting parameter tailoring, and post-processing technique. In this study, a review was given based on relevant studies, focusing on the predictive approach, reinforcing mechanism, and microstructure tailoring methods of B2-CuZr phase reinforced amorphous alloy matrix composites. The research focus and future prospects were also given for the future development of the present composite system.