加工Al_2O_(3f)+C_f/ZL109混杂增强复合材料的刀具磨损性能研究  

Experiment Study on Tool Wear of Al_2O_(3f)+C_f/ZL109 Hybrid Composites

作　　者：代汉达[1] 刘耀辉[2] 高印寒[3] 杜军[2] 

机构地区：[1]吉林大学机械科学与工程学院,吉林长春130025 [2]吉林大学汽车材料教育部重点实验室,吉林长春130025 [3]吉林大学测试科学与实验中心,吉林长春130025

出　　处：《摩擦学学报》2005年第5期436-440,共5页Tribology

基　　金：吉林省科技厅资助项目(963543);吉林大学青年教师基金资助项目(403010131460)

摘　　要：利用挤压铸造法制备了炭短纤维(Cf)和A l2O3 f短纤维增强以及混杂增强ZL 109复合材料,研究了切削加工A l2O3 f+Cf/ZL 109混杂复合材料过程中,Cf短纤维和A l2O3 f短纤维含量以及切削速度对刀具磨损性能的影响.结果表明,刀具后刀面的磨损量随着纤维含量的增加而增加,A l2O3 f短纤维对刀具磨损性能的影响程度大于Cf短纤维;2种短纤维混杂增强较单一Cf或A l2O3 f增强时刀具后刀面的磨损将进一步加剧,但2种纤维对刀具磨损的交互作用并不显著;随着切削速度的增加,刀具后刀面的磨损量明显增大.高硬度PCD刀具和CBN刀具适用于加工A l2O3 f+Cf/ZL 109混杂复合材料.Al2O3f＋Cf/ZL109 short fibers reinforced with hybrid metal matrix composites and the single reinforced composites was fabricated by squeeze casting. Effects of Al2O3f、Cf, volume fraction, and cutting speed on tool wear during cutting were investigated, the wear mechanism was analysed. The results show that the tool wear increase with the increasing of fiber volume fraction. Work piece made of material reinforced by two kinds of short fibers exhibited large wear rate than reinforced with only short fiber Cf or Al2O3f did, but tool wear rate was not influenced obviously by the synergistic effect of two kinds of fibers. Wear of tool increased with increasing cutting speed. Results show that PCD and CBN tool are suitable for machining composite reinforced by two types of fibers.

关 键 词：炭纤维 三氧化二铝纤维 短纤维混杂 金属基复合材料 刀具磨损 

分 类 号：TH117.3[机械工程—机械设计及理论]