Abstract
The effects of solidification conditions on microstructure in wedge chill casting of ingots with the Al-Ni system. Three Al-Ni alloys, Al-6.1, 9.2 y 17.1 wt%Ni were prepared and cast into a wedge-shape mold at 100°C above the liquids temperature. These ingots were analyzed longitudinally by optical and scanning electron microscopy and by X-ray diffraction. Three main types of microstructure A1= (αA+Al-Al3N), E1=(Al-Al3Ni) and B1=(Al3Ni+Al-Al3Ni) were observed, which presented two transitions in the eutectic: from B1 →E1 en Al-9.2% Ni and from E1 →Al en Al-6.1%Ni, with increase of the growth velocity. The primary phase Al3Ni in B1 was formed at higher alloy contents, while the primary phase αA1 in A1 was only observed in Al-6 wt% Ni.
| Translated title of the contribution | Solidification microstructure and characteristics in wedge ingots in the aluminum-nickel system |
|---|---|
| Original language | Spanish |
| Pages (from-to) | 3-8 |
| Number of pages | 6 |
| Journal | Informacion Tecnologica |
| Volume | 12 |
| Issue number | 5 |
| State | Published - 2001 |
| Externally published | Yes |