Abstract
When the Ni-Cr-W superalloy melt was held at near liquidus under electromagnetic field and poured into ingot molds, some ingots with uniform fine equiaxed grains can be obtained. The finite element models of temperature field about different masses of Ni-20Cr-18W superalloy melts treated by induction electromagnetic field were established. The effects of the induction melting process parameters such as current frequency, heating power and the mass of the superalloy melt on the distribution of melt temperature field were investigated. The optimal parameters for holding a certain mass of superalloy melt at near liquidus were obtained. An empirical formula of relationship between the mass of superalloys and optimal heating power was established. The optimal current frequency is 200 Hz. The research results provide a useful support for optimizing the induction melting process parameters for near liquidus melt treatment.
| Original language | English |
|---|---|
| Pages (from-to) | 1434-1440 |
| Number of pages | 7 |
| Journal | Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals |
| Volume | 24 |
| Issue number | 6 |
| State | Published - Jun 2014 |
Keywords
- Finite element simulation
- Melt treatment
- Near liquidus casting
- Ni-Cr-W superalloy