Ti活化Al_2O_(3p)/65钢复合材料的组织和性能  

Microstructure and Properties of Ti Activated Al_2O_(3p)/65 Steel Composites

作　　者：廖冲[1] 卢德宏[1] 余晶[1] 王剑[1] 任博[1] 张无虚 蒋业华[1] 

机构地区：[1]昆明理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2017年第2期190-193,共4页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51265019)

摘　　要：在Al_2O_3预制坯里添加15%的Ti粉,制备Ti活化Al_2O_(3p)/65钢复合材料,研究了Ti元素对复合材料组织、润湿行为和性能的影响。相比未添Ti粉的复合材料,添加Ti粉的复合材料其钢基体中铁素体含量得到提高,生成了TiC界面层,增强颗粒与基体界面的表现为冶金结合,润湿角由125°降到75°;复合材料的硬度、三点抗弯强度及三体磨料磨损性能也均得到提高。Through adding 15% Ti powder into Al2O3 preform,Al2O3/65 steel composites with Ti activation were prepared to understand effects on microstructure,wettability and performance.Compared with composites without Ti powder,ferrite content in the composites with Ti powder is increased,and TiC interface layer is generated.Enhancement particles exhibit metallurgical bonding with matrix interface,where wettability angle is decreased from 125°to 75°.In addition,hardness,bending strength and abrasive wear of the composites are improved.

关 键 词：Al2O3p/65钢复合材料 Ti粉 润湿行为 组织 

分 类 号：TB333[一般工业技术—材料科学与工程]