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- W1978394043 abstract "▶ Using a melt reaction method, Al–Ti–C–RE master alloys with various amounts of RE were prepared. ▶ Investigating by optical microscopy, X-ray diffraction, scanning electron microscopy, and X-ray energy-dispersive spectrum, we discovered that the master alloy consisted of α-Al, lath-shaped TiAl 3 , granular TiC, and blocky or rim Ti 2 Al 20 Ce phases. ▶ We found that the addition of RE can promote the formation of TiC particle, modify the morphology and size of TiAl 3 compound, as a result Al–Ti–C–RE master alloys showed a better grain refining performance than Al–Ti–C master alloys. ▶ The refinement mechanism of Al–Ti–C–RE has also been discussed. Al–Ti–C–RE master alloy has been successfully prepared by reaction of K 2 TiF 6 salt, graphite powder and rare earth (RE) with Al. The microstructure of the alloy was characterized by optical microscopy, X-ray diffraction, scanning electron microscopy equipped with energy-dispersive spectrometry. The results show the microstructure of Al–Ti–C–RE alloy is composed of α-Al, lath-shaped TiAl 3 , granular TiC, and blocky or rim Ti 2 Al 20 Ce. Compared with the Al–Ti–C master alloy, the addition of RE modifies the morphology of TiAl 3 phase, accelerates the formation of TiC. Al–Ti–C–RE alloy was used for grain refinement studies on commercial pure aluminum. An excellent grain refining performance was obtained when the addition level of Al–Ti–C–RE reaches to 0.5 wt%. The refinement mechanism of Al–Ti–C–RE has also been discussed." @default.
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- W1978394043 date "2010-10-01" @default.
- W1978394043 modified "2023-09-22" @default.
- W1978394043 title "Grain refining efficiency and microstructure of Al–Ti–C–RE master alloy" @default.
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- W1978394043 doi "https://doi.org/10.1016/j.jallcom.2010.08.047" @default.
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