自蔓延预热爆炸固结Mo/Cu功能梯度材料的研究  

Self-Propagating Combustion Preheating and Explosive Consolidation of Mo/Cu Functionally Gradient Material

作　　者：王鹏飞[1] 沈卫平[1] 张强[1] 张珂[1] 蒋志明[2] 陈鹏万[2] 

机构地区：[1]北京科技大学,北京100083 [2]北京理工大学,北京100081

出　　处：《稀有金属材料与工程》2007年第4期652-655,共4页Rare Metal Materials and Engineering

摘　　要：设计并采用自蔓延燃烧预热,水介质缓冲双向爆炸固结的方式制备了Mo/Cu功能梯度材料(FGM),观测了Mo/CuFGM的显微组织并分析了固结过程。对各层的密度、硬度、电导率等进行了测量和分析。发现随着Cu含量的增多,材料的密度平缓递减但相对密度逐渐增大,硬度降低,电导率升高。相对密度从Mo层的94.2%到Cu层的98.4%,试样整体的相对密度达95.5%。Mo/CuFGM第1层与第2层间的剪切强度为214.8MPa;Mo/CuFGM第3层,第4层的热导率分别为204.76W·m-1·K-1和249.71W·m-1·K-1。Mo/Cu functionally gradient material （FGM） was prepared by self-propagating combustion preheating and bidirectional explosive consolidation with buffer action of water. The density, hardness and electric conductivity of each layer were measured： the relative density increased, the hardness decreased and the electric conductivity increased with the increase of Cu content in Mo/Cu FGM. The microstructure of Mo/Cu FGM was observed by SEM. The relative density of each layer in Mo/Cu FGM increased from 94.2% of Mo layer to 98.4% of Cu layer. The relative density of integral Mo/Cu FGM attained 95.5 %. The shearing strength between the first layer and the second layer of the Mo/Cu FGM was 214.8 MPa. The thermal conductivities of third layer and fourth layer were 204.76 W·m^-1·K^-1 and 249.71 W·m^-1·K^-1, respectively.

关 键 词：Mo/Cu合金 自蔓延 爆炸固结 功能梯度材料 

分 类 号：TB34[一般工业技术—材料科学与工程]