强冲击加载条件下的钨合金的界面研究  

Study on the Interface of Sintered Tungsten Alloys under Intense Shock Loading

作　　者：周素红[1] 姚蓓[1] 姚吉祥[1] 张宝平[2] 杨超[2] 焦彤[2] 

机构地区：[1]北京理化分析测试中心 [2]北京理工大学

出　　处：《分析测试学报》1998年第1期14-17,共4页Journal of Instrumental Analysis

摘　　要：借助定量金相、扫描电子显微镜、透射电子显微镜等微观分析手段对钨质量分数为９３％的钨合金在１５～５０ＧＰａ冲击压力下微观结构响应性态进行了考察，发现了一些钨合金所特有的现象，即钨颗粒与粘结相交界处出现成分迁移，新相析出；并结合断口分析，探讨了钨合金在冲击作用下发生断裂的微观特征与韧脆转化间的关系及其物理本质。The microstructural responsive behavior of 93 wt % tungsten alloy to intense shock loading under pressures of 15～50 GPa was investigated by phase analysis,SEM and TEM techniques. New phenomena characteristic of the tungsten alloys were observed on the interface between tungsten grains and the matrix (W_M interface), namely, atom migration, formation of new phases, and segregation of new metallic compounds, etc. Microscopic features of dynamic fracture of tungsten alloys under shock loading, as well as their relationship with the ductility_brittleness transition were discussed.

关 键 词：成分迁移 韧脆转化 界面 钨合金 

分 类 号：TG146.411[一般工业技术—材料科学与工程]