| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1645347 | Materials Letters | 2013 | 4 Pages |
•A magnetic field distinctly decreases the size of γ′ phase of Ni-based superalloy.•A magnetic field distinctly decreases the content of carbides and γ/γ′ eutectic.•The segregation of alloying elements is decreased by magnetic field.
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 γ′ and the content of carbides and γ/γ′ eutectic. The decreased magnitude is firstly sharp and then gentle with the increasing magnetic field intensity. The γ′ 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 γ/γ′ eutectic. The magnetic- field-assisted directional solidification provides an effective way to control the size and content of precipitation in superalloys.
