The effect of magnetic field on precipitation phases of single-crystal nickel-base superalloy during directional solidification

被引：27
|
作者：
Ren, Weili [1 ]
Lu, Liang [1 ]
Yuan, Guangzhou [1 ]
Xuan, Weidong [1 ]
Zhong, Yunbo [1 ]
Yu, Jianbo [1 ]
Ren, Zhongming [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Lab Met & Mat Proc, Shanghai 200072, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 100卷
关键词：
Solidification; Segregation; Microstructure; Nickel-base superalloy; SEGREGATION;
D O I：
10.1016/j.matlet.2013.03.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of magnetic field on precipitation phases in directional solidified single-crystal nickel-base superalloy was investigated. The magnetic field significantly decreases the size of gamma' and the content of carbides and gamma/gamma' eutectic. The decreased magnitude is firstly sharp and then gentle with the increasing magnetic field intensity. The gamma' phase refinement could be attributed to a decrease in nucleation activation energy during solid phase transformation. The segregation reduction of alloying elements is responsible for the content decrease of carbides and gamma/gamma' eutectic. The magnetic-field-assisted directional solidification provides an effective way to control the size and content of precipitation in superalloys. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：223 / 226
页数：4
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