Abstract
Effects of Mo on the solidification structure and solidification route of high Nb-TiAl alloy prepared by a non-consumable arc melting furnace in an argon atmosphere were analyzed. The results reveal that solidification route is changed and solidification structure is refined in Ti-46Al-6Nb-0.2B alloy with Mo addition. With 1% Mo addition, solidification structure of the alloy is composed of α2 phase and γ phase as well as minor β phase, and major β phase is segregated along the grain boundary as network structure, and the minor one is distributed in lamellar colony as strip structure. With increasing in Mo addition, β phase is increased. Based on phase diagram, solidification route of the high Nb-TiAl alloy with different Mo content was presented.
| Original language | English |
|---|---|
| Pages (from-to) | 376-379 |
| Number of pages | 4 |
| Journal | Tezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys |
| Volume | 31 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2011 |
Keywords
- Mo alloying
- Solidification
- Structure refinement
- TiAl alloy
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