热压烧结制备高密度钨铜合金  

Hot-pressing Sintering of W-15Cu Alloy

作　　者：史晓亮[1] 邵刚勤[1] 段兴龙[1] 杨华[1] 王天国[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《机械工程材料》2007年第3期37-39,78,共4页Materials For Mechanical Engineering

基　　金：武汉市青年科技晨光计划资助项目;武汉市攻关项目(20041003068-04);国家自然科学基金(50502026)

摘　　要：以用机械合金化法制备的超细W-15Cu复合粉末为原料,采用热压烧结工艺制备了高密度的W-15Cu合金,用扫描电镜、硬度仪、密度测试仪等研究了烧结工艺对合金组织和性能的影响。结果表明:采用高能球磨可以制备出钨晶粒镶嵌铜相中的复合粉末;采用热压烧结,在30 MPa、1500℃×2h的条件下,可以制备出相对密度99.8%、断裂强度1290.6 MPa、硬度44.8 HRC的高密度钨铜合金。W-15Cu composite powders prepared by mechanical alloying of raw powders were consolidated by hot-pressing sintering process, and the influences of sintering process on the properties of W-15Cu alloy were investigated. The microstructure and properties of the alloy were studied by using scanning electron microscopy （SEM）, Vickers hardness tester, etc. The W grains were homogeneously dispersed in copper phase. W-15Cu alloy consolidated by hot-pressing sintering at temperature 1 500℃ for 2 hours and under a pressure of 30 MPa could reach 99. 8% relative density, 1290. 6 MPa of transverse rupture strength （TRS） 44. 8 HRC of Rockwell C hardness.

关 键 词：钨铜合金 机械合金化法 热压烧结 力学性能 

分 类 号：TF125.2[冶金工程—粉末冶金] TG135.5[冶金工程—冶金物理化学]