|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Gas Turbines
||C-14: Solidification Behavior and Microstructure of Inconel 625 Superalloy under Electromagnetic Field
||Tao Wang, Fei Wang, Engang Wang
|On-Site Speaker (Planned)
The solidification behavior and microstructure of Inconel 625 superalloy under electromagnetic field with different electric current and frequency was investigated in laboratory with a undirectional mold. The experimental results show that most of the microstructure of Inconel 625 alloy changed from columnar dendrites to equiaxed grains as applied electromagnetic stirring, and the average equiaxed grain size is greatly refined. The real-time temperature measurement during the solidifying of Inconel 625 superalloy show that the inner temperature distribution in mold is more uniform when the electromagnetic field is applied. The main precipitated phases in Inconel 625 alloy, such as nitride(MN), carbide(MC) and (γ+Laves) eutectic structure, also have changed as applied electromagnetic stirring. The quantity and area proportion of (γ+Laves) and MC is reduced when the electromagnetic field is applied with a suitable current and frequency. The relative mechanism of action is also analyzed.
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