Influence of Static Magnetic Field on the Microstructure of Nickel-Based Superalloy by Laser-Directed Energy Deposition

被引：0
|
作者：
Dafan Du
Anping Dong
Da Shu
Donghong Wang
Guoliang Zhu
Baode Sun
Enrique J. Lavernia
机构：
[1] Shanghai Jiao Tong University,Shanghai Key Lab of Advanced High
[2] University of California,temperature Materials and Precision Forming
来源：
Metallurgical and Materials Transactions A | 2020年 / 51卷
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摘要：
The influence of a static magnetic field on microstructure evolution during laser direct energy deposition was studied. Our results reveal that dendrite spacing increases with increasing magnetic field flux density (MFFD). Moreover, electron backscatter diffraction results reveal that the epitaxial growth was preferred with increasing MFFD. We discuss these findings in terms of the influence of a magnetic field on melt convection and propose that an applied magnetic field effectively limits Marangoni convection.
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页码：3354 / 3359
页数：5
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