水冷铜坩埚悬浮熔炼K4169合金的组织和力学性能
发布时间：2019-02-24 13:55
【摘要】：利用水冷铜坩埚悬浮熔炼制备K4169合金,采用扫描电子显微镜(SEM)、X射线衍射(XRD)等,研究了水冷铜坩埚悬浮熔炼对K4169合金的组织和室温力学性能的影响。研究结果表明:熔炼工艺对K4169合金析出相无明显影响;水冷铜坩埚悬浮熔炼相比真空感应熔炼K4169合金存在更明显的枝晶组织和块状、链状的Laves相;室温下拉伸性能比真空感应熔炼K4169合金高56%;水冷铜坩埚悬浮熔炼K4169试样断口中二次枝晶臂排列紧密,三次枝晶臂相互交联,而真空感应熔炼试样枝晶臂更加短小;水冷铜坩埚悬浮熔炼比真空感应熔炼K4169合金室温下抗压强度高25%,但塑性较低。
[Abstract]:K4169 alloy was prepared by water cooled copper crucible suspension melting. The effect of water cooled copper crucible suspension melting on the microstructure and mechanical properties of K4169 alloy at room temperature was studied by scanning electron microscope (SEM) (SEM), X ray diffraction (XRD). The results show that the melting process has no obvious effect on the precipitating phase of K4169 alloy, and that there are more dendritic structure and block, chain-like Laves phase in water cooled copper crucible suspension melting than in vacuum induction melting. The tensile properties of K4169 alloy are higher than that of K4169 alloy in vacuum induction melting at room temperature, the secondary dendrite arms are arranged closely in the fracture surface of water-cooled copper crucible suspension melting K4169 sample, and the third dendritic arms are cross-linked with each other, while the dendritic arms of vacuum induction melting samples are shorter. Water cooled copper crucible suspension melting is 25% higher than that of vacuum induction melting K4169 alloy at room temperature, but the plasticity is low.
【作者单位】： 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;
【基金】：国家重点基础研究发展计划(编号:2012CB722800)
【分类号】：TF19;TF133;TG146.15
本文编号：2429605
[Abstract]:K4169 alloy was prepared by water cooled copper crucible suspension melting. The effect of water cooled copper crucible suspension melting on the microstructure and mechanical properties of K4169 alloy at room temperature was studied by scanning electron microscope (SEM) (SEM), X ray diffraction (XRD). The results show that the melting process has no obvious effect on the precipitating phase of K4169 alloy, and that there are more dendritic structure and block, chain-like Laves phase in water cooled copper crucible suspension melting than in vacuum induction melting. The tensile properties of K4169 alloy are higher than that of K4169 alloy in vacuum induction melting at room temperature, the secondary dendrite arms are arranged closely in the fracture surface of water-cooled copper crucible suspension melting K4169 sample, and the third dendritic arms are cross-linked with each other, while the dendritic arms of vacuum induction melting samples are shorter. Water cooled copper crucible suspension melting is 25% higher than that of vacuum induction melting K4169 alloy at room temperature, but the plasticity is low.
【作者单位】： 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室;
【基金】：国家重点基础研究发展计划(编号:2012CB722800)
【分类号】：TF19;TF133;TG146.15
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