Abstract
Influence of magnetic stirring on the solidification structure and segregation behavior of Ti-1023 alloy during VAR steady state melting process was analyzed by SEM (scanning electron microscope), XRD (X-ray diffraction) and chemical composition analysis. The results reveal that equiaxed grain zone mainly contains acicular and lamellar a structure, while columnar grain zone is mainly composed of equiaxed grain a structure. Fe element content is gradually increased in both equiaxed and columnar grains along the grain growth direction, and the segregation rate of Fe element is more serious in equiaxed grain than that in columnar grain. The segregation rate of Fe element is decreased in both equiaxed and columnar grains with magnetic stirring, and macro-segregation of Fe element in the ingot is decreased, which is closely related to the formation of β phase in the alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 1079-1082 |
| Number of pages | 4 |
| Journal | Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys |
| Volume | 30 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2010 |
Keywords
- Magnetic Stirring
- Segregation Behavior
- Solidification Structure
- Ti-1023 Alloy
- VAR
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