Journal
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
Volume 24, Issue 2, Pages 108-112Publisher
MANEY PUBLISHING
DOI: 10.1179/1743133610Y.0000000007
Keywords
SDAS; Antimony; Al-Si alloy; Directional solidification
Categories
Funding
- National Research University of Thailand's Office of the Higher Education Commission
- Thailand Graduate Institute of Science and Technology [TG-33-20-864D]
Ask authors/readers for more resources
The effects of Sb on the secondary dendrite arm spacing (SDAS) were investigated in directional solidification experiments under different cooling rates. The addition of Sb reduced the average SDAS at higher Sb contents. The most effective reduction occurs at 0.12 wt-%Sb. Our results also reveal a reduced variation in the SDAS upon the addition of Sb in the higher range, i.e. 0.18-0.30 wt-%. We suggest that the reduced variation in the SDAS upon addition of Sb in this range resulted from the interaction between the accumulation of Sb at the solid/liquid interface that increases the instability at the solid/liquid interface and later decreases the SDAS and a high concentration of Sb that increases the accumulation of Sb at the solid/liquid interface and results in a larger amount of AlSb or Mg3Sb2 intermetallic phases and a higher latent heat.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available