利用金属诱发无压浸渗技术制备的B_4C/Mg复合材料为实验材料,研究该材料的磨损行为与磨损机制。在销盘式实验装置上对施加不同载荷(20、40、60和80N)以及磨损速率为250r/min实验条件下的磨损行为进行评价。结果表明:B_4C/Mg复合材料在所施加载荷下均比纯Mg基体表现出更优异的抗磨性能。作为诱发浸渗剂的金属Ti颗粒,其含量对B_4C/Mg复合材料的磨损性能具有一定影响。纯Mg基体的主要磨损机制是磨粒磨损;而对于B_4C/Mg复合材料,当施加载荷较低时,主要磨损机制为粘着和层离;当施加载荷较高时,其磨损机制为加热软化熔化或塑性变形。 B_4C / Mg composites prepared by metal induced pressureless infiltration were used as experimental materials to study the wear behavior and wear mechanism of the composites. The wear behavior under different test conditions (20, 40, 60 and 80N) and the wear rate of 250r / min was evaluated on a pin-on-disk test device. The results show that B_4C / Mg composite shows more excellent wear resistance than pure Mg matrix under the applied load. The content of Ti, as the inducer of impregnating agent, has certain influence on the wear properties of B_4C / Mg composites. The main wear mechanism of pure Mg matrix is ​​abrasive wear; while for B_4C / Mg composites, the main wear mechanism is sticking and delamination when the applied load is low; the wear mechanism is heating softening and melting Or plastic deformation.