- Tytuł:
- Characterization of Ca Precipitation in Al-Mg Alloys Containing a Trace of Ca During Homogenization
- Autorzy:
-
Ha, Seong-Ho
Shin, Young-Chul
Kim, Bong-Hwan
Yoon, Young-Ok
Lim, Hyun-Kyu
Lim, Sung-Hwan
Kim, Shae K. - Powiązania:
- https://bibliotekanauki.pl/articles/2049165.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
Al-Mg system
precipitation
Mg+Al2Ca mater alloy
transmission electron microscope
phase diagram - Opis:
- In this study, precipitation of Ca in Al-Mg alloys containing a trace of Ca during homogenization was investigated using a transmission electron microscope (TEM) and calculated phase diagrams. TEM result indicated that the Ca-based particles found in the examined sample are Ca7Mg7.5Si14. From the calculation of Scheil-Gulliver cooling, it was found that the Ca was formed as Al4Ca and C36 laves phases with Mg2Si and Al13Fe4 from other impurities phase during solidification. No Ca-Mg-Si ternary phase existed at the homogenization temperature in the calculated phase diagram. From the phase diagram of Al-Al4Ca-Mg2Si three-phase isothermal at 490°C, it was shown that Ca7Mg6Si14 phase co-exists with Al, Mg2Si and Al4Ca in the largest region and with only Al and Mg2Si in Al4Ca-poor regions. It was thought that the Ca7Mg6Si14 ternary phase was formed by the interaction between Mg2Si and Al4Ca considering that the segregation can occur throughout the entire microstructures.
- Źródło:
-
Archives of Metallurgy and Materials; 2021, 66, 4; 959-962
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł