Research on vacuum-electromagnetic casting of IN100 superalloy ingots

• Main Author: Wenzhong Jin, Tingju Li and Guomao Yin
• Format: Article
• Language: English
• Published: Taylor & Francis Group 2007-01-01
• Series: Science and Technology of Advanced Materials
• Online Access: http://www.iop.org/EJ/abstract/1468-6996/8/1-2/A01

In order to improve the inner quality of superalloy master alloy ingots, the new technology of superalloy vacuum-electromagnetic casting, i.e. applying electromagnetic stirring (EMS) to the solidification process of superalloy vacuum casting was developed. The effect of EMS on the inner quality of IN100 superalloy ingots was studied with EPMA and optical microscope. The results show that while an EMS with 50 Hz frequency and 60 A current is imposed, the equiax crystals of IN100 superalloy ingots can be effectively refined and increased, and the central shrinkage porosity and the dendritic segregation of IN100 superalloy ingots are greatly reduced, so the inner quality of IN100 superalloy ingots is obviously improved.