摘要
C19400铜合金是一种可用来制作引线框架的材料。采用金相显微镜、X射线衍射仪和扫描电镜研究了C19400铜合金铸态和轧制态的显微组织。结果表明:铸态C19400铜合金存在典型的树枝晶组织,树枝晶组织中有弥散的Fe_2P和碳元素偏聚;轧制态C19400铜合金存在典型的织构,还有α-Fe,RD面上有大颗粒的Fe_2P和碳元素偏聚,大颗粒的Fe_2P是在轧制过程中形成的,轧制不能消除碳偏析。
C19400 copper alloy is a material that may and as-rolled C19400 copper alloy were investigated be used to make lead frame. The microstructures of as-casted by means of optical microscope, X-ray diffractometer and scanning electron microscope. The results show that there are typical dendritic structures in the as-cast copper alloy, and Fe2P phases disperse in the dendritic structure. In addition, the typical texture and α-Fe are present in the as-rolled C19400 alloy, and large-sized Fe2P and carbon element segregation exist in the RD plane. The largesized Fe2P forms during the rolling, and the carbon element segregation can not be eliminated during the rolling.
出处
《热处理》
CAS
2017年第5期5-9,共5页
Heat Treatment
