高能球磨对TiC_(0.5)/Cu(Al)复合材料组织和性能的影响  

Effect of high energy ball milling on microstructure and properties of TiC_(0.5)/Cu(Al) composites

作　　者：刘晓涵[1] 翟洪祥[1] 黄振莺[1] 李萌启[1] 

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《北京交通大学学报》2014年第4期40-43,50,共5页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家科技支撑计划项目资助(2009BAG12A01);国家自然基金资助项目(51301013)

摘　　要：以Ti2AlC和Cu粉作为原料,分别采用滚筒球磨和高能球磨对原料粉进行预混处理,在1 150℃下原位热压反应制备了TiC0.5/Cu(Al)复合材料.实验结果表明,Al从Ti2AlC溶出进入Cu中,Ti2AlC分解并转变成TiC0.5相,然而滚筒球磨制备的复合材料中生成少量AlCu2Ti相.通过对原料粉高能球磨处理,制备后的复合材料AlCu2Ti相消失,细小的TiC0.5颗粒均匀分布于基体中.两种不同方法制备的复合材料的弯曲强度和维氏硬度试验结果表明,高能球磨工艺能提高TiC0.5/Cu(Al)复合材料的弯曲强度,同时维氏硬度略有降低.其中,高能球磨处理后制备的27%TiC0.5/Cu(Al)复合材料的弯曲强度达到981 MPa,维氏硬度为2.43 GPa.TiCo.5/Cu（A1） composites were prepared by in-situ hot pressing at the high temperature of 1150℃ using Ti2A1C and copper powders as raw materials. Raw materials were mixed by rotary drum type ball milling and high energy ball milling respectively before sintering. As shown in the results, A1 of Ti2A1C dissolved and diffused into Cu. Ti2A1C decomposed and turned into TiC0.5. A small amount of A1Cu2Ti phase was found in the composites whose milling method was rotary drum type ball milling. Due to high energy ball milling method, A1Cu2Ti phase generated in the composites finally disappeared. Fine TiC0.5 particle homogeneously distributed in the matrix. Flexural strength of the composites increased. But Vickers hardness slightly decreased. 27% TiC0,5/Cu（A1） composites whose milling method was high energy ball milling has quite high flexural strength（981 MPa） and Vickers hardness（2.43 GPa）.

关 键 词：复合材料 TiC0.5/Cu(Al) AlCu2Ti相 高能球磨 显微组织 性能 

分 类 号：TB333[一般工业技术—材料科学与工程]