Effect of carbon addition on carbide morphology of single crystal Ni-based superalloy

作     者：余竹焕 刘林 张军 Zhu-huan YU;Lin LIU;Jun ZHANG

作者机构：西安科技大学材料科学与工程学院西安710054 西北工业大学凝固技术国家重点实验室西安710072 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第2期

页      面：339-345页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project(51201130)supported by the National Natural Science Foundation of China Project(2012JQ6005)supported by the Natural Science Basic Research Plan in Shaanxi Province of China Project(SKLSP201226)supported by the Fund of the State Key Laboratory of Solidification Processing in NWPU,China Project(11JK0805)supported by Scientific Research Program Funded by Shaanxi Provincial Education Department,China Project(2010CV631201)supported by the National Basic Research Program of China 

主　　题：single crystal superalloy directional solidification carbon levels carbide morphologies 

摘      要：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.