Development and evaluation of Al-Ti-C master alloys as grain refiner for aluminum

Book · Tue Oct 01 00:00:00 EDT 1996

OSTI ID:372027

Hadia, M A ^[1]; Ghaneya, A A; Niazi, A ^[2]

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1. Aluminum Co. of Egypt, Nag Hammadi (Egypt)
2. Assiut Univ. (Egypt)

A series of Al-Ti-C master alloys with different amounts of titanium and carbon (Al-3.5%Ti-0.5%C, Al-3.5%Ti-0.7%C and Al-5%Ti-1%C) has been developed by adding activated graphite to molten Al-Ti binary alloys. The micro-structures of the developed alloys were investigated. The efficiency of the produced alloys as aluminum grain refiner was evaluated. The effects of the following factors were investigated: addition rate of each master alloy, the pouring temperature of the refined metal and the holding time before pouring. Also, the contact time for each refiner was studied. The results were significant and the refiner Al-5%Ti-1%C was the most effective.

• OSTI ID: 372027
• Report Number(s): CONF-960202--; ISBN 0-87339-312-0
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CARBON ADDITIONS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
EFFICIENCY
EXPERIMENTAL DATA
GRAIN REFINEMENT
GRAIN SIZE
GRAPHITE
MICROSTRUCTURE
SCANNING ELECTRON MICROSCOPY
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TITANIUM ADDITIONS
TITANIUM ALLOYS
TITANIUM CARBIDES
X-RAY DIFFRACTION