Increasing porosity and generating expected internal structure for metal-bonded grinding wheel are the critical enabling technologies for high performance grinding wheel fabrication. Conventional hot pressing sintering (HPS) fabrication process has little capability in active formation of pore structure. In this paper, metal 3D printing technology is applied to fabricate the composite used for metal-bonded diamond grinding wheel. Through the measurement of morphological properties, mechanical properties and forming limits, the formability and performance of 3D-printed composite are evaluated. To predict the mechanical performance and understand the failure behavior, the representative volume element (RVE) model is developed for the 3D-printed metal matrix composite. And final grinding experiment indicates that 1) The 3D printing technology for composite and complicated internal structure exhibits promising potential for high performance grinding wheel fabrication with inter-connected lubrication channel and sufficient mechanical strength; 2) The 3D-printed porous wheel demonstrates sufficient durability in grinding process and superior performance in grinding capability.

金属粘结砂轮的增加的孔隙率和产生预期的内部结构是高性能砂轮制造的关键使能技术。常规的热压烧结（HPS）制造工艺几乎不能主动形成孔结构。本文采用金属3D打印技术来制造用于金属结合的金刚石砂轮的复合材料。通过测量形态学性能，机械性能和成型极限，评估了3D打印复合材料的可成型性和性能。为了预测机械性能并了解失效行为，针对3D打印的金属基复合材料开发了代表性体积元素（RVE）模型。最终的磨削实验表明：1）复合材料和复杂内部结构的3D打印技术在具有相互连接的润滑通道和足够的机械强度的高性能砂轮制造中显示出广阔的前景；2）3D打印的多孔砂轮在磨削过程中表现出足够的耐用性，在磨削性能方面表现出众。