Single crystal superalloys of AM3 with different carbon levels were prepared at withdraw rate of 50μm/s. The effect of carbon addition on the carbide morphology was investigated. It was found that there were four typ...Single crystal superalloys of AM3 with different carbon levels were prepared at withdraw rate of 50μm/s. The effect of carbon addition on the carbide morphology was investigated. It was found that there were four types of MC-type carbides, acicular, nodular, blocky, and Chinese script-type in the crystals. With an increase in carbon level, the volume fraction of carbide increased significantly while the volume fraction of eutectic decreased significantly. Furthermore, the size of carbide in high level carbon alloy became much larger.展开更多
基金Project(51201130)supported by the National Natural Science Foundation of ChinaProject(2012JQ6005)supported by the Natural Science Basic Research Plan in Shaanxi Province of China+2 种基金Project(SKLSP201226)supported by the Fund of the State Key Laboratory of Solidification Processing in NWPU,ChinaProject(11JK0805)supported by Scientific Research Program Funded by Shaanxi Provincial Education Department,ChinaProject(2010CV631201)supported by the National Basic Research Program of China
文摘Single crystal superalloys of AM3 with different carbon levels were prepared at withdraw rate of 50μm/s. The effect of carbon addition on the carbide morphology was investigated. It was found that there were four types of MC-type carbides, acicular, nodular, blocky, and Chinese script-type in the crystals. With an increase in carbon level, the volume fraction of carbide increased significantly while the volume fraction of eutectic decreased significantly. Furthermore, the size of carbide in high level carbon alloy became much larger.
