Production of bulk glassy composites with large-size ultra-high strength and enhanced plasticity by spark plasma sintering

采用火花等离子烧结技术制备了大尺寸、超高强度、增强塑性的大块金属玻璃基复合材料。研究了非晶合金分类、显微组织、晶体颗粒种类、分数、颗粒大小和分布对复合材料性能的影响。制备的大块玻璃合金复合材料塑性的提高源于颗粒夹杂引起的组织不均匀性。额外的颗粒作为一种抵抗介质，引起剪切带的偏差、分支和倍增。

Using a spark plasma sintering process, production of the bulk metallic glassy matrix composites with large-size ultra-high strength and enhanced plasticity has been carried out. Effect of the glassy alloy classification, microstructure, species of the crystalline particulates, fraction, particulate size, and distribution on the properties of the obtained composites was investigated. The improvement of plasticity of the fabricated bulk glassy alloy composites originates from the structural inhomogeneity caused by the particles inclusion. The additional particulates act as a resisting media causing deviation, branching and multiplication of shear bands.