一种抗热腐蚀定向凝固镍基高温合金铸态组织  

A Cast Microstructures of a Hot Corrosion Resistant Directionally-solidified Ni-base Superalloy

作　　者：王欢 秦学智[2] 周兰章[2] Wang Huan;Qin Xuezhi;Zhou Lanzhang(Sichuan Engineering Technical College,Deyang,Sichuan,618000,China;Institute of Metal Research,Chinese Academy of Sciences,Shenyang,Liaoning,110016,China)

机构地区：[1]四川工程职业技术学院材料系,四川德阳618000 [2]中国科学院金属研究所,辽宁沈阳110016

出　　处：《装备制造与教育》2021年第1期57-60,共4页Equipment Manufacturing and Education

摘　　要：本文利用OM、SEM和TEM等分析方法研究了定向凝固镍基高温合金DZ483的铸态组织特征。结果表明:DZ483的铸态组织主要由树枝晶、γ/γ'共晶、MC碳化物、硼化物和η相组成。共晶主要呈扇形、放射形以及网状分布,MC碳化物主要呈块状汉字状分布在枝晶间区域,硼化物和η相主要分布在γ/γ'共晶前沿。In this paper,OM,SEM and TEM are used to study the as-cast microstructure characteristics of a hot corrosion resistant directionally-solidified Ni-base superalloy DZ483.The results show that,the microstructures of the as-cast alloy include dendrite,γ-γ'eutectic,MC carbide,boride andηphase.Eutectics are mainly fan-shaped,radial,and reticulated,MC carbides are mainly distributed in block-like Chinese characters in the interdendritic region,and boride andηphases are mainly distributed at theγ/γ'eutectic front.

关 键 词：抗热腐蚀镍基高温合金 定向凝固 铸态组织 

分 类 号：TG441.8[金属学及工艺—焊接]