CuNiSiCr合金时效析出与再结晶的交互作用  

The Interaction between Precipitation and Recrystallization of CuNiSiCr Alloy

作　　者：雷静果[1] 刘平[1] 赵冬梅[1] 康布熙[1] 田保红[1] 

机构地区：[1]河南科技大学材料科学与工程学院,471003

出　　处：《新技术新工艺》2005年第6期53-55,共3页New Technology & New Process

基　　金：河南省重大科技攻关项目(0122021300)

摘　　要：研究了CuNiSiCr合金在时效过程中,析出与再结晶的交互作用及其对合金性能的影响,并借助扫描与透射电镜观察合金的组织变化。结果表明,在所研究的变形量范围内,形变后的时效中第2相析出发生在再结晶之前,析出相对合金的再结晶有阻碍或促进作用。在再结晶的形成和长大过程中,析出相在晶界前沿快速粗化或重新溶解,并在再结晶区域中重新析出,估算了在一定时效工艺下被溶解析出相的临界尺寸。The interaction between precipitation and recrystallization and its effect on the properties of the Cu-Ni-Si-Cr alloy during aging period are discussed. Microstrutures were observed by means of scanning and transmission electron microscopies. The results show that the precipitation process takes place before the recrystallization for the deformed Cu-Ni-Si-Cr alloy in the range of studied deformation. The precipitations have acceleration or retardation effects on the recrystallization. On the formation and growth of recrystallization, the precipitated phases are coarsed or dissolved in the front of grain boundaries following a re-precipitation in the recrystallization area, the critical size of disssolved precipitations at a certain aging condition is estimated.

关 键 词：交互作用 再结晶 CU-NI-SI-CR合金 时效析出 透射电镜观察 析出相 时效过程 合金性能 组织变化 长大过程 结晶区域 临界尺寸 时效工艺 变形量 相析出 溶解 形变 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TN405.96[金属学及工艺—金属材料]