Instability mechanism of lamellar structures of Ti-48Al alloy solidified under high pressure was investigated. The results indicate that after 1100 ℃/12 h air cool, α2 phase particles can hardly be seen in normal pressure solidified Ti-48Al alloy. Howerver, α2 phase has been found in high pressure solidified Ti-48Al alloy. Incresaing the temperature to 1280 ℃, the high pressure solidified Ti-48Al alloy is easier to decomposite than normal pressure. This research has provided the basis of further studying on the microstructures and phase transformation of high pressure solidified Ti-Al intermetallics and enriched the theory of high pressure solidification.
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[z, d,h, z,z, l. Instability mechanism of lamellar structures of Ti-48Al alloysolidified under high pressure[J]. Rare Metal Materials and Engineering,2017,46(S1):217~220.] DOI:[doi]